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The area of a circle is 20 pie. Find the radius in simplest form?

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The area of a circle is 20 pie. Find the radius in simplest form?

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asked Mar 18, 2014 in GEOMETRY by johnkelly Apprentice

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1 Answer

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Area of circle = пr ^2

A = 20п

пr ^2 = 20п

Cancel the common terms.

r ^2 = 20

Apply squre root on each side.

√r ^2 = √20

r = 4.47

answered Mar 19, 2014 by david Expert

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