Question

If the radius of a cricle is double its area increases by

Answer 1

Answer:

Twice..is the answer

mark me as brainliest..

Answer 2

Step-by-step explanation:

Let r be the radius of a circle.

Area of the circle is = pi*r^2

If the radius of the circle is doubled,

Let R be the radius of new circle, R=2r

Area of new circle is = pi*R^2

Area =pi*(2r)^2

Area=pi*4*r^2

=4*pi*r^2

=4* Area of the circle.

So, area is increased by 4 times, when radius is doubled.