Find the circumference and area of the circle. Express answers in terms of pi

Question

and then round to the nearest tenth. with a the circle being 18yd.

Answer 1

Circumference = 2πr = 2π(9) = 18π ≈ 56.5 yd

Area = πr^2 = π(9)^2 = 81π ≈ 254.5 sq yd