If the radius of a circle is doubled, how does the area of the circle change?

Mathematics

1 answer:

Zina [86]2 years ago

7 0

If the radius of a circle is doubled, the area of the circle is quadrupled.
area of a circle = 2(pi)(radius)^2
when r = 2, area = 8pi
when r = 4, area = 32pi
you can see that the area is quadrupled

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Step-by-step explanation :

Adjacent angles : It is defined as the two angles that have the common arm and common vertex.

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And we know that the vertically opposite angles are equal.

In the given image, the angles are vertical angles and vertically opposite angles are equal.

So,

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