How to find the area of a rectangle - Math
Card 0 of 1808
Find the area of a rectangle whose width is 
and length is 
.
Find the area of a rectangle whose width is
To solve, simply use the formula for the area of a rectangle. Thus,
To solve, simply use the formula for the area of a rectangle. Thus,
Compare your answer with the correct one above
Find the area of a rectanlge whose length is 
and width is 
.
Find the area of a rectanlge whose length is
To solve, simply use the formula for the area of a rectangle. Thus,
To solve, simply use the formula for the area of a rectangle. Thus,
Compare your answer with the correct one above
What is the total surface area of the enclosed region?
What is the total surface area of the enclosed region?
First, we must find the missing lengths. Because we know that the length going horizontally across on the bottom is 6 cm and 8 cm, that must mean that the length going across at the top must also equal this sum.
So, the length of the top must equal
6 + 8 =
We are given one value of the length on the top, 4. To find the missing horizontal length on the top, we must subtract 4 from 14.
14 – 4 = 10.
In order to find the other missing length, we must observe that the greatest vertical length of this figure is 12 cm. Because we are given 4 cm and 5 cm, we must subtract 4 and 5 from 12 to find the other missing length.
12 – 4 – 5 =
Now, let's divide this enclosed region in three separate rectangles.
The rectangle at the top has a length of 4 cm and width of 3 cm.
The middle rectangle has a length of
10 + 4 =
14 cm
and a width of 5 cm.
The bottom rectangle has a length of 8 cm and width of 4 cm.
If the formula for the area of a rectangle is length x width, we must now calculate the individual areas of each rectangle and add them up.
Area of top rectangle
4 x 3 = 12cm2
Area of middle rectangle
14 x 5 = 70cm2
Area of bottom rectangle
8 x 4 = 32cm2
12cm2 + 32cm2 + 70cm2 =
114cm2
First, we must find the missing lengths. Because we know that the length going horizontally across on the bottom is 6 cm and 8 cm, that must mean that the length going across at the top must also equal this sum.
So, the length of the top must equal
6 + 8 =
We are given one value of the length on the top, 4. To find the missing horizontal length on the top, we must subtract 4 from 14.
14 – 4 = 10.
In order to find the other missing length, we must observe that the greatest vertical length of this figure is 12 cm. Because we are given 4 cm and 5 cm, we must subtract 4 and 5 from 12 to find the other missing length.
12 – 4 – 5 =
Now, let's divide this enclosed region in three separate rectangles.
The rectangle at the top has a length of 4 cm and width of 3 cm.
The middle rectangle has a length of
10 + 4 =
14 cm
and a width of 5 cm.
The bottom rectangle has a length of 8 cm and width of 4 cm.
If the formula for the area of a rectangle is length x width, we must now calculate the individual areas of each rectangle and add them up.
Area of top rectangle
4 x 3 = 12cm2
Area of middle rectangle
14 x 5 = 70cm2
Area of bottom rectangle
8 x 4 = 32cm2
12cm2 + 32cm2 + 70cm2 =
114cm2
Compare your answer with the correct one above
Robert needs to determine the area of his rectangular wall in order to buy the proper amount of paint at the store. When he measures his wall he determines that it is 12 feet high and 20 feet wide. If one can of paint covers 40 square feet of wall, how many cans of paint does Robert need?
Robert needs to determine the area of his rectangular wall in order to buy the proper amount of paint at the store. When he measures his wall he determines that it is 12 feet high and 20 feet wide. If one can of paint covers 40 square feet of wall, how many cans of paint does Robert need?
Find the area of the wall - 12times 20=240
Divide 240div 40=6
6 cans of paint.
Find the area of the wall - 12times 20=240
Divide 240div 40=6
6 cans of paint.
Compare your answer with the correct one above
If Bailey is making a quilt for a bed that measures 
feet wide and 
feet long, and she wants there to be an extra foot of quilt to hang over each side of the bed, how much material should she buy.
If Bailey is making a quilt for a bed that measures
In order to determine how much material Bailey needs, we must first find the area of space she needs to cover. Since Bailey would like the quilt to be an extra foot on each side, we must add 
feet to both the length and width.
Width 
Length 
Now we apply the formula for the area of a rectangle, which is 
.
In order to determine how much material Bailey needs, we must first find the area of space she needs to cover. Since Bailey would like the quilt to be an extra foot on each side, we must add
Width
Length
Now we apply the formula for the area of a rectangle, which is
Compare your answer with the correct one above
Mr. Barker is building a rectangular fence. His yard has an area of 24 feet, and the one side of the fence he's already built is 6 feet long.
What is the length of the other side (the width) of the fence?
Mr. Barker is building a rectangular fence. His yard has an area of 24 feet, and the one side of the fence he's already built is 6 feet long.
What is the length of the other side (the width) of the fence?
The answer is 4 feet, because 
and a rectangle must have 4 sides, with 2 sides of one length and 2 sides of another.
feet
making the other side 4 feet,
The answer is 4 feet, because
and a rectangle must have 4 sides, with 2 sides of one length and 2 sides of another.
making the other side 4 feet,
Compare your answer with the correct one above
Give the area of the rectangle in the above diagram.
Give the area of the rectangle in the above diagram.
Multiply the length by the width to get the area of the rectangle:
The area of the rectangle is 198 square inches.
Multiply the length by the width to get the area of the rectangle:
The area of the rectangle is 198 square inches.
Compare your answer with the correct one above
Which could be the dimensions of a rectangle with the area 
?
Which could be the dimensions of a rectangle with the area
To find the area, simply multiply the sides of the rectangle. The only sides which add up to 
are:
To find the area, simply multiply the sides of the rectangle. The only sides which add up to
Compare your answer with the correct one above
Mr. Smith is planting a rectangular garden with a length of 5 ft and a width of 7 ft. What is the area of the garden?
Mr. Smith is planting a rectangular garden with a length of 5 ft and a width of 7 ft. What is the area of the garden?
The area of a rectangle can be calculated by multiplying the length by the width.
The area of a rectangle can be calculated by multiplying the length by the width.
Compare your answer with the correct one above
Give the area of the above rectangle in square centimeters.
Give the area of the above rectangle in square centimeters.
Since 1 meter = 100 centimeters, multiply each dimension by 100 to convert meters to centimeters. This makes the dimensions 200 centimeters by 500 centimeters.
Use the area formula, substituting 
:
Since 1 meter = 100 centimeters, multiply each dimension by 100 to convert meters to centimeters. This makes the dimensions 200 centimeters by 500 centimeters.
Use the area formula, substituting
Compare your answer with the correct one above
What is the area of a rectangle with a length of 
feet and a width of 
feet?
What is the area of a rectangle with a length of
To find the area of a rectangle, multiply the length by the width.
To find the area of a rectangle, multiply the length by the width.
Compare your answer with the correct one above
Sally's room measures 100 square feet. Which type of measurement is this?
Sally's room measures 100 square feet. Which type of measurement is this?
Area is measured in units squared, and volume is measured in units cubed. Width, length, and perimeter are all measured in regular units.
Therefore, 100 square feet is the area of the room.
Area is measured in units squared, and volume is measured in units cubed. Width, length, and perimeter are all measured in regular units.
Therefore, 100 square feet is the area of the room.
Compare your answer with the correct one above
Joe has a rectangular poster that is 3 feet long and 2 feet wide. What is the area of the poster?
Joe has a rectangular poster that is 3 feet long and 2 feet wide. What is the area of the poster?
The area of a rectangle is found by multiping the length times the width. Given that the length is 3 feet, the width is 2 feet, the total cubic area would be found using this equation:
Here is the equation with the appropriate numbers plugged in from the question:
6 square feet, or 
is the correct answer.
The area of a rectangle is found by multiping the length times the width. Given that the length is 3 feet, the width is 2 feet, the total cubic area would be found using this equation:
Here is the equation with the appropriate numbers plugged in from the question:
6 square feet, or
Compare your answer with the correct one above
Leslie has a blanket that is 
in area. Jen has a blanket that is half the size of Leslie's blanket. How big is Jen's blanket?
Leslie has a blanket that is
If Jen's blanket is half as big as Leslie's blanket, and Leslie's blanket is 
, then we need to divide by 2 to find the area of Jen's blanket.
The area of Jen's blanket is 
.
If Jen's blanket is half as big as Leslie's blanket, and Leslie's blanket is
The area of Jen's blanket is
Compare your answer with the correct one above
If a rectangle has an area of 18, which of the following are possible dimensions of the length and width?
If a rectangle has an area of 18, which of the following are possible dimensions of the length and width?
If the area of the rectangle is 18, that means that the length and the width, when multiplied together, should equal 18.
The only numbers from the answer choices that would result in the product of 18 are 9 by 2, which is therefore the correct answer.
If the area of the rectangle is 18, that means that the length and the width, when multiplied together, should equal 18.
The only numbers from the answer choices that would result in the product of 18 are 9 by 2, which is therefore the correct answer.
Compare your answer with the correct one above
What is the area (in square feet) of a rectangle with a length of 
feet and a width of 
feet?
What is the area (in square feet) of a rectangle with a length of
The area of a rectangle is calculated by multiplying length times width.
Given that the width is 6 feet and the height is 7, the product of 6 and 7 is 42.
Therefore, 42 is the correct answer.
The area of a rectangle is calculated by multiplying length times width.
Given that the width is 6 feet and the height is 7, the product of 6 and 7 is 42.
Therefore, 42 is the correct answer.
Compare your answer with the correct one above
If the area of a rectangle is 28 square inches and its width is 4 inches, what is the length in inches?
If the area of a rectangle is 28 square inches and its width is 4 inches, what is the length in inches?
The area of a rectangle is equal to the width multiplied by the length, or:
If the area of a rectangle is 28 inches and the width is 4 inches, then plugging this into the equation we would get:
Divide both sides by 4 to solve.
The area of a rectangle is equal to the width multiplied by the length, or:
If the area of a rectangle is 28 inches and the width is 4 inches, then plugging this into the equation we would get:
Divide both sides by 4 to solve.
Compare your answer with the correct one above
Ben is making a sandbox with a width of 4 feet and a length of 6 feet. What is the area of the sandbox?
Ben is making a sandbox with a width of 4 feet and a length of 6 feet. What is the area of the sandbox?
The area of a rectangle is the width times the length.
The width is 4 feet and the length is 6 feet. Because 4 times 6 is 24, the area is 24 square feet.
The area of a rectangle is the width times the length.
The width is 4 feet and the length is 6 feet. Because 4 times 6 is 24, the area is 24 square feet.
Compare your answer with the correct one above
Jerry has a mat with an area of 20 square feet and a length of 5 feet. What is the width of the mat in inches?
Jerry has a mat with an area of 20 square feet and a length of 5 feet. What is the width of the mat in inches?
The area of a rectangle is the width times the length.
Given that the area is 20 square feet and the length is 5 feet, the width would have to be 4 feet because 5 times 4 is 20.
Given that the question asks for the width in inches, 4 should be multiplied by 12 (as there are 12 inches in a foot).
This gives us a product of 48 inches, which is the width.
The area of a rectangle is the width times the length.
Given that the area is 20 square feet and the length is 5 feet, the width would have to be 4 feet because 5 times 4 is 20.
Given that the question asks for the width in inches, 4 should be multiplied by 12 (as there are 12 inches in a foot).
This gives us a product of 48 inches, which is the width.
Compare your answer with the correct one above
What is the area of a rectangle with a width of 6 inches and a length of 7 inches?
What is the area of a rectangle with a width of 6 inches and a length of 7 inches?
The area of a rectangle is equal to the length multiplied by the width. Since the width is 6 inches and the length is 7 inches, the area is equal to 6 times 7.
The area is 42 square inches.
The area of a rectangle is equal to the length multiplied by the width. Since the width is 6 inches and the length is 7 inches, the area is equal to 6 times 7.
The area is 42 square inches.
Compare your answer with the correct one above