Question

what would be the area of the circle if the radius is 20 CM

Answer 1

$ar = \pi {r}^{2} \\ = \frac{22}{7} \times {20}^{2} \\ = 1256 {cm}^{2}$

Answer 2

radius = 20cm
area of circle = π r^2
= 22/7×20×20
= 1257.14 cm^2 (approx)