Math 7 - Area & Circumference of Circles Practice

Find the circumference of the circle. Use  $\pi$  = 3.14.

Find the circumference of the circle. Round your answer to the nearest hundredth.

Find the circumference of the circle in terms of  $\pi$ .

Find the area of the circle. Use  $\pi$ = 3.14.

Find the area of the circle. Round your answer to the nearest hundredth.

Find the area of the circle. Leave your answer in terms of  $\pi$ .

The area of a circle is 78.5 $cm^2$  . Find the length of the radius of the circle. Use  $\pi$  = 3.14. 

The circumference of a circle is 141.3 inches. Find the length of the diameter of the circle. Use  $\pi$  = 3.14.

The circumference of a circle is 19 $\pi$ feet. Find the length of the circle's diameter. 

The area of a circle is 81 $\pi\ cm^2$  . Find the length of the circle's radius.