Question

if radius of a circle is 21cm then find its area ​

Answer 1

hey here is your answer

hence, it's area = πr²

= 22/7 × 21 × 21

= 22 × 3 × 21

= 1386cm²

make sure it brainliest please

Answer 2

Hey mate here's your answer ,

radius (r)= 21 cm

$area \: of \: circle \: = \pi \: r {}^{2}$

$= 22 \div 7 \times 21 \times 21$

= 22 × 3 × 21

= 1386cm square

Hope it's helpful for you.