High School Math : Pre-Algebra

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #361 : Pre Algebra

What is the perimeter of an equilateral triangle if one side is ?

Possible Answers:

We need to know the lengths of the other sides to solve.

Correct answer:

Explanation:

The perimeter is the sum of the sides of the triangle. Because the triangle is equilateral, all three sides have equal length.

That means we can take the formula 

and say .

 

Example Question #362 : Pre Algebra

Find the perimeter of a square with a side of 4 meters. 

Possible Answers:

Correct answer:

Explanation:

Since each side in a square is equal, and perimeter involves adding up all of the sides, multiply 4 by 4 to get 16 meters. 

Example Question #2 : How To Find The Perimeter Of A Square In Pre Algebra

What is the perimeter of a square with a side length of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a square you must multiply the side length by .

To do this we plug the side length into the equation 

Multiply the side length, , by  to get the answer .

Example Question #3 : How To Find The Perimeter Of A Square In Pre Algebra

What is the perimeter of the square with a side length of ?

Possible Answers:

There is insufficient information to solve.

Correct answer:

Explanation:

The way to find the perimeter of a square is to add up the lengths of all the sides. Since this is a square, each side will have the same length; if one of the sides is , the other sides will be 8 as well.

From here: 

Example Question #2 : How To Find The Perimeter Of A Square In Pre Algebra

What is the perimeter of a square if one side is ?

Possible Answers:

We need to know the lengths of the other sides in order to be able to solve.

Correct answer:

Explanation:

Each of the sides of a square is equal. This means we can take the formula for the perimeter of a rectangle, , and say that, for a square, .

Since the problem gives us the length of the side, we can solve:

Example Question #5 : How To Find The Perimeter Of A Square In Pre Algebra

If the perimeter of a square is , what is the length of each side?

Possible Answers:

There is insufficient information to solve

Correct answer:

Explanation:

Each of the sides of a square is equal. We can take the formula for the perimeter of a rectangle, , and say that for a square, , or .

The problem gives us the perimeter so we can solve:

Divide both sides by :

Example Question #6 : How To Find The Perimeter Of A Square In Pre Algebra

If the perimeter of a square is , what is the side length?

Possible Answers:

Correct answer:

Explanation:

The formula for the perimeter of a square is .

Plug in our given information.

Example Question #2 : How To Find The Perimeter Of A Square In Pre Algebra

What is the perimeter of a square with a side of ?

Possible Answers:

Correct answer:

Explanation:

The formula for perimeter of a square is .

Plug in our given information.

Example Question #8 : How To Find The Perimeter Of A Square In Pre Algebra

What is the perimeter of a square with a side length of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a square, you must multiply the side length by .

To do this we plug the side length into the equation .

Then multiply the side length by .

 

The answer is .

Example Question #2 : How To Find The Perimeter Of A Square In Pre Algebra

The perimeter of a square is . What is the length of each side?

Possible Answers:

Correct answer:

Explanation:

The perimeter is the sum of each of the sides of the shape. Since this is a square, all the sides will be equal. Therefore, the formula for the perimeter of a square is .

Plug in our given information to solve:

Since we have four 's, we can combine like terms:

Now divide by :

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