BellKelsey2006 BellKelsey2006

26-02-2022
Mathematics

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

Hint: find the area of a circle with r=2 & r=4; compare answers.

If the radius of a circle is doubled how does the area of the circle change Hint find the area of a circle with r2 amp r4 compare answers class=

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simplygabbie713 simplygabbie713

26-02-2022

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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