Area of the circle obtained in Question 4 (A wire is bent to form a square of side 22 cm. If the wire is rebent to form a circle, its radius is 14 cm)
a. 196 cm²
b. 212 cm²
c. 616 cm²
d. 644 cm²

Solution:

A circle is a two-dimensional figure formed by a set of points that are at a constant or at a fixed distance (radius) from a fixed point (center) on the plane.

The fixed point is called the origin or center of the circle and the fixed distance of the points from the origin is called the radius.

The radius of circle obtained in question 4 is 14 cm

We know that

Area of a circle = πr²

Substituting the values

= 22/7 × 14 × 14

= 616 cm²

Therefore, the area of the circle is 616 cm².

✦ Try This: A wire is bent to form a square of side 66 cm. If the wire is rebent to form a circle, its radius is

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

NCERT Exemplar Class 7 Maths Chapter 9 Problem 5

Area of the circle obtained in Question 4 (A wire is bent to form a square of side 22 cm. If the wire is rebent to form a circle, its radius is 14 cm) a. 196 cm², b. 212 cm², c. 616 cm², d. 644 cm²

Summary:

Area of the circle obtained in Question 4 is 616 cm²

☛ Related Questions:

• Area of a rectangle and the area of a circle are equal. If the dimensions of the rectangle are 14cm . . . .
• Area of shaded portion in Fig. 9.15 is a. 25 cm², b. 15 cm², c. 14 cm², d. 10 cm²
• Area of parallelogram ABCD (Fig. 9.16) is not equal to a. DE × DC, b. BE × AD, c. BF × DC, d. BE × B . . . .