Question

The circumference of the circle is 123.2cm then the radius of the circle is *

Answer 1

Answer:

Radius = 19.6 cm

Step-by-step explanation:

Circumference of the circle = 123.2 cm

2 π r = 123.2 cm

2 × 22/7 × r = 123.2

r = 123.2 × 7/22 × 1/2

r = 19.6 cm

Answer 2

Answer:

Radius of circle is 19.62 cm.

Step-by-step explanation:

Given -

Circumference of circle is 123.2 cm

To find -

The radius of circle

Solution -

The circumference means the length of the complete arc of a circle.

As we know that,

Circumference of circle = $2 \times \pi \times r$

Where,

r is a radius of circle.

Put the given values in these formula we get

$123.2 = 2\pi \times r$

$\frac{123.2}{2\pi} = r$

$\frac{61.6}{\pi} = r$

The value of π is 3.14 .

$\frac{61.6}{3.14} = r$

$r = 19.62$

So,

Radius of circle is 19.62 cm.