Question

the radius of the circle is 21 CM find area of the circle​

Answer 1

Step-by-step explanation:

area=

$\pi \: r {}^{2}$

22/7 * 21*21

=22*3*21

=1386 cm^2

Answer 2

Step-by-step explanation:

area of circle = πr²

area = π x 21 x 21 (substituting the value of r=21)

area = 441π cm²

exact area = 441 x 22/7 = 1386cm² { take the value of π=22/7 )