Question

find the area of a circle whose circumference is 40 cm.

please solve correct answer​

Answer 1

Answer=
Area of circle = 127.12cm^2

Answer 2

Answer:

127cm sq.

Step-by-step explanation:

Given that

Circumference of circle is 40cm

To find

area of circle

Solution

As we know that

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

and

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

now

put

$\pi = 3.14$

$40 = 2 \times 3.14 \times radius$

to find radius

$radius = \frac{40}{2 \times 3.14}$

$radius = 6.36cm$

$area \: of \: circle = 3.14 \times {6.36}^{2}$

by multiplication

$area \: of \: circle = 127 {cm}^{2}$