Question

Find the area of a circle with a circumference of 50.24 units

Answer 1

C = $\pi$ × d

50.24 ÷ $\pi$ = d

d = 15.99 units

r = 7.995 units

Therefore area:

A = $\pi r^{2}$

= $\pi$ × $7.995^{2}$

= 200.8

= 201 $units^{2}$ ( 3 significant figures )