SSC CGL 2022 PYQ — Question 71

The correct answer is Option 4 i.e. 7 cm.

Given:

Side of square = 11 cm

Concept Used:

Perimeter of square = 4a

Circumference of circle = $2\pi r$

If a wire is bent to change the shape, then their perimeter is same.

Explanation:

ccording to the given question,

4a = $2\pi r$

⇒ ${4 \times 11} = 2 \times {22 \over 7} \times r$

⇒ r = 7

Hence the radius of the circle thus formed is 7 cm.