Question

find the area of circle whos radius 21 cm​

Answer 1

Answer:

radius=21cm

Area of a circle=πr2

22/7×21×21

1386cm2

Step-by-step explanation:

Hope it may be help you

Good morning

Answer 2

$\Large\sf {\fcolorbox {cyan} {black} {\pink{Answer}}}$

$\large\fbox\green{Area\:of\:circle\:=\:πr²}$

$\large\fbox\orange{Value\:of\:π\:=\:22/7\:or\:3.14}$

Radius = 21 cm

Area = πr²

$\therefore$ Area = $\Large{21\:×\:21\:×}$ $\LARGE\frac{22}{7}$

Area = $\Large{441\:×}$ $\LARGE\frac{22}{7}$

$\large\fbox\blue{∴\:Area\:is\:1,384cm²}$