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# Circumference of a circle is always

a. more than three times of its diameter

b. three times of its diameter

c. less than three times of its diameter

d. three times of its radius

**Solution:**

A __circle__ can be defined as a 2D figure formed by a set of points that are adjacent to each other and are equidistant from a fixed point.

The fixed point in this curved plane figure is called the center of the circle, the common distance between the points from the center is called a radius, and a line that crosses from the center of the circle starting from one point to the other is called a diameter.

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

We know that

Circumference of a circle = 2πr

Value of π = 3.14

Circumference of a circle = 2 × 3.14 × r

As Diameter = 2r

Circumference of a circle = 3.14 d

Therefore, the circumference is always more than three times of its diameter.

**✦ Try This: **18 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is

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

**NCERT Exemplar Class 7 Maths Chapter 9 Problem 14**

## Circumference of a circle is always a. more than three times of its diameter, b. three times of its diameter, c. less than three times of its diameter, d. three times of its radius

**Summary:**

Circumference of a circle is always more than three times of its diameter

**☛ Related Questions:**

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- Area of triangle PQR is 100 cm² (Fig. 9.20). If altitude QT is 10 cm, then its base PR is a. 20 cm, . . . .
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