If the area of a circle equals 36π, what is the radius?

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Prepare for the AMSOC 26-003 Module A Test. Utilize flashcards and multiple choice questions with hints and explanations. Ace your exam!

Multiple Choice

If the area of a circle equals 36π, what is the radius?

Explanation:
Area of a circle is π times the radius squared. If the area is 36π, then π r^2 = 36π. Divide both sides by π to get r^2 = 36. The radius is the nonnegative root, so r = 6. (The negative root, -6, isn’t possible for a radius.)

Area of a circle is π times the radius squared. If the area is 36π, then π r^2 = 36π. Divide both sides by π to get r^2 = 36. The radius is the nonnegative root, so r = 6. (The negative root, -6, isn’t possible for a radius.)

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