Question

find the circumference of circle and area of circle of radius 20 cm.​

Answer 1

Answer:

125.6cm

2512 cm²

Step-by-step explanation:

circumference of the

cicle. = 2πr

= 2x3.14x20

=125.6cm

area of

circle = 2πr²

= 2x3.14x400

=2512 cm²

Answer 2

Answer:

Area is 1256.637 sq cm

circumference of circle is 125.66cm

Step-by-step explanation:

Given that

Radius of circle is 20cm

To find

Area of circle

Solution

As we know that

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

hence

$\pi = 3.14$

we get

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

by multiplication we get

$area \: of \: circle = 1256.637 {cm}^{2}$

As we know

$perimeter \: of \: circle = 2 \times \pi \times radius$

$perimeter \: of \: circle = 2 \times 3.14 \times 20$

by multiplication we get

$perimeter \: of \: circle = 125.66 {cm}^{2}$