Question

Find the circumference and area of a circle with a diameter of 10". Leave your answer in terms of pi

Answer 1

Diameter is 2r (radius*2)

2r = 10

r = 10/2 = 5"

Circumference = 2*r*pi = 10pi inch= 31,4"

Area = r^2*pi = 5^2*pi = 25pi inch^2= 78,5 inch^2