If the radius of a circle is tripled, the area becomes(a) 9 times (b) – InterviewSolution

1.

If the radius of a circle is tripled, the area becomes(a) 9 times (b) 3 times (c) 6 times (d) 30 times

Answer»

(a) 9 times

Area of circle = πr²

From the question, the radius of a circle is tripled = 3r

Then, area = π(3r)²

= 9πr²

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