The area of a circle with radius r is given by the forumular A=πr^2. If a circle has area 144π square inches, what is the radius?
I got 12. Is that right?
I got 12. Is that right?
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A=πr^2.
i.e. 144pi = pi r^2
or pi is cancelled,
or, r^2= 144
therefore,
r=12 which means, you are right.
i.e. 144pi = pi r^2
or pi is cancelled,
or, r^2= 144
therefore,
r=12 which means, you are right.
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CORRECT!!! :D
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yes u r absolutely right, r = 12