Question

Find the circumference of a circle whose radius is 49 cm.

Answer 1

circumference = 2pi r
radius = 49cm
so
2pi r
=2pi *49
=2*22/7*49
=2*22*7
=44*7
= 308cm

Answer 2

The circumference of a circle is 308 cm whose radius is 49 cm.

Given:

• A circle
• Radius (r)= 49 cm

To find:

• circumference of a circle.

Solution:

Formula to be used:

• Circumference of a circle = 2πr

Step 1:

Write the given value of radius; r= 49 cm

Step 2:

Put the value of radius.

Circumference of a circle $= 2 \times \frac{22}{7} \times 49$

or

$= 2 \times \frac{22}{ \cancel 7} \times\cancel{ 49} \: 7$

or

$= 44 \times 7$

or

Circumference of a circle$\bf = 308 \: cm$

Thus,

Circumference of a circle is 308 cm.

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