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# Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with __________.

**Solution:**

Given, d is the diameter of a circle

We have to find the circumference of circle C

The circumference of a circle is its boundary or the length of the complete arc of a circle.

Diameter = d

Radius = diameter/2

r = d/2

So, d = 2r

Circumference of circle = 2πr

Where, r is the radius of circle

= π(2r)

= πd

Therefore, circumference, C = πd

Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with π

**✦ Try This: **Find the circumference of a circle with diameter 7 cm.

Given, the diameter of the circle is 7 cm.

We have to find the circumference of a circle.

Circumference of circle = πd

Where, d is the diameter of circle

= (22/7)(7)

= 22 cm

Therefore, the circumference is 22 cm.

**☛ Also Check: **NCERT Solutions for Class 7 Maths Chapter 11

**NCERT Exemplar Class 7 Maths Chapter 9 Problem 48**

## Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with __________.

**Summary:**

Circumference ‘C’ of a circle can be found by multiplying diameter ‘d’ with π

**☛ Related Questions:**

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