Question

find the area of a circle if radius is 21cm,using pie-22/7​

Answer 1

Answer:

1386 sqcm

Step-by-step explanation:

area of circle=

$\pi {r}^{2} \\ = \frac{22}{7} \times {21}^{2} \\ = 22 \times 21 \times 3 \\ = 1386 \: {cm}^{2}$