In a circle, the radius is made twice in length. The area of the circle will be increased by ______?
- Thrice
- Four times
- Five times
- None of these
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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