Question

find the circumfrence of a circle whose area is7546 sq.cm

Answer 1

Answer:

307.2 cm^2

Step-by-step explanation:

Area of circle=pi r^2

Finding r from there executing in

circumference=2 pi r

Answer 2

Answer:

309.29cm

Step-by-step explanation:

Given that

Area of circle is 7546 sq.cm.

To find

Circumference of circle

Solution

As we know that

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

put

$\pi = 3.14$

now

$7546 = 3.14 \times {radius}^{2}$

to find radius

$radius \: = \sqrt{ \frac{7546}{3.14} }$

by division and square root we get

$radius = 49.25$

hence radius is 49.25cm

Now

as we know that

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

hence

$circumference = 2 \times 3.14 \times 49.25$

by multiplication we get

$circumference \: of \: circle = 309.29cm$