Question

determine (a) the area and (b) the circumference of the circle

Answer 1

The radius is half the diameter, so r = d/2 = 28/2 = 14

So r = 14

a)

Area = pi*radius^2

A = pi*r^2

A = pi*14^2

A = pi*196

A = 196pi

So the exact area is 196pi sq yds

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b)

Circumference = 2*pi*radius

C = 2pi*r

C = 2*pi*14

C = 28pi

and the circumference is exactly 28pi yards