Circumferences and Areas of Circles
By C Roach
Directions and/or Common Information:
Find the circumference for each circle.


If a circle has a circumference of 7 meters, what is the length of its diameter?
If a circle has a circumference of 72 inches, what is the length of its radius?
Directions and/or Common Information:
Find the area of each circle.


Find the diameter of a circle whose area is 88 cm2.
Mary's neighbor has a pool that she wants to emulate in her own backyard. The pool is unique because it is a perfect circle and unlike any pool she has seen. Mary needs to hire a builder, but first she needs to find out the area of her neighbor's pool. If her neighbor's pool's circumference is 60ft, what is the best possible estimate of the pool's area?