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# Circumference ‘C’ of a circle is equal to 2π × ______.

**Solution:**

Given, circumference ‘C’ of a circle is equal to 2π × _____

We have to fill in the blanks with suitable answers to make the statement true.

Circumference of circle = 2πr

Where, r is the radius of circle

Therefore, circumference ‘C’ is equal to 2π × r

**✦ Try This****: **Find the circumference of semicircle with diameter 21 cm.

Given, the diameter of the semicircle is 21 cm.

We have to find the circumference of the semicircle.

Circumference of semicircle = πd/2

Where, d is the diameter of circle

= (22/7)(21)/2

= 22(3)/2

= 11(3)

= 33 cm

Therefore, the circumference of the semicircle is 33 cm.

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

**NCERT Exemplar Class 7 Maths Chapter 9 Problem 49**

## Circumference ‘C’ of a circle is equal to 2π × ______.

**Summary:**

Circumference ‘C’ of a circle is equal to 2π × r(radius)

**☛ Related Questions:**

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