Question

Find the Circumference and Area of the circle with a diameter of 3 inches.

Answer 1

Circumference-18.84956, rounded, 18.85

Area- 28.27433, rounded-38.27

Answer 2

C≈9.42in

A≈7.07in²

Explanation:

C=2πr

d=2r

C=πd=π·3≈9.42478in

A=πr2

d=2r

A=1

4πd2=1

4·π·32≈7.06858in²

Hope this helps!