Question

taking π is = 3.14 find the perimeter and area of circle whose radius is 20 centimetre ​

Answer 1

Step-by-step explanation:

given

radius of circle=20cm

π=3.14

so,

area of circle=πr²

=3.14*20*20

=1256cm²

similarly

perimeter of circle=2πr

=2*3.14*20

=125.6cm

I hope it will be helpful

Answer 2

Answer:

Perimeter is 125.6cm

Area is 1256 sq.cm

Step-by-step explanation:

Given that

Radius of circle is 20cm

To find

Perimeter of circle

Area of circle

Solution

As we know that

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

hence

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

hence by multiplication we get

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

now

as we know

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

$= 2 \times 3.14 \times 20$

by multiplication

$perimeter \: of \: circle = 125.6 cm$