evancoil evancoil

03-03-2021
Mathematics

contestada

If the area of a circle is 121pi square units, what is its diameter

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lindseyp1419 lindseyp1419

03-03-2021

The area of a circle is A = r^2pi
Since the area is equal to 121pi the equation would be, 121pi = r^2. To find r in terms of pi take the square root of 121, to find the radius. Then multiply that by two to get the diameter.

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