Apply Circle Area and Circumference Formulas Practice Test

A circular garden has a radius of 8 feet. If the owner wants to install a decorative border around the entire perimeter and then cover the garden with mulch, what is the total cost if the border costs $3 per foot and mulch costs $2 per square foot? Use $$\pi \approx 3.14$$.

A circular garden has radius $7\text{ m}$. What are its circumference and area? Give exact answers in terms of $\pi$ and approximations using $\pi\approx 3.14$.