Question

Find the radius of the circle if the area of the circle is 22 cm.

(a) 1521.14 m

(b) 1511.14 m

(c) 1021.14 m

(d) 1520.14 m

I have been asked this question during a job interview.

This is a very interesting question from Perimeter and Area of a Circle in section Area Related to Circles of Mathematics – Class 10

Answer 1

Correct answer is (a) 1521.14 m

To explain: The area of the circle (A) = πr^2

A = \(\frac {22}{7}\) (22)^2

A = 1521.14 m