Question

The perimeter of a circle is 176 cm, find its radius.

Answer 1

Given:

the perimeter of the circle - 176 cm

To find :

The radius of the circle

Solution:

The perimeter of the circle - 176 cm

The formula for the perimeter of the circle which is also known as the circumference is as follows

$C = 2 \pi r$

Where C is the circumference of the circle,

r is the radius and

we will take the universal value of pi as 22/7

adding the values,

$C = 2\pi r$

$176 = 2 \times \frac{22}{7} \times r$

$176 \times 7 = 2 \times 22 \times r$

$1232 = 44r$

$r = \frac{1232}{44}$

$r = 28cm$

Therefore, the radius of the circle is 28cm.