Question

find the area of a circle whose radius is 20cm​

Answer 1

Answer:

1256.6 Cm. Sq.

Step-by-step explanation:

Formula:

A=pi r^{2}

or

A equals pi R squared

Im not sure, though it could be wrong

Answer 2

Answer:

1256 sq.cm

Step-by-step explanation:

Given that

Radius of circle is 20cm

To find

Area of circle

Solution

As we know that

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

$area \: of \: square = \pi \times {20}^{2}$

put

$\pi = 3.14$

$area \: of \: circle = 3.14 \times {20}^{2}$

hence

$area \: of \: circle = 1256 {cm}^{2}$