Find the area and the circumference of a circle with diameter 9 ft.

Use the value 3.14 for π , and do not round your answers. Be sure to include the correct units in your answers.

3 answers

Area = 25.13 ft^2
Circumference = 28.26 ft
r = d / 2
r = 9 / 2 ft
r = 4.5 ft

A = πr^2
A = (3.14) * 4.5^2
A = 63.585 ft^2
C = 2πr

Make sure you double-check value for C also.