In a circle, the radius is made twice in length. The area of the circle will be increased by ______?
Maths / Geometry MCQs — Multiple-choice practice
- A. Five times
- B. Thrice
- C. Four times
- D. None of these
Correct answer
Four times
Explanation
Explanation Given that the radius of a circle is increased to twice its original length We have to find the increase in the area of the circle Area of circle = πr² Where r is the radius of the circle Now, r = 2r Area of circle = π(2r)² = 4πr² Last updated by NA on 27 April 2026
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