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The area of a circle is 81𝜋 square centimeters. What is the diameter?

Solution

The area of a circle is 81𝜋 square centimeters. What is the diameter?

Solution

d iam e t er : 18 c m

Solution steps

Given:

a re a : 81 π c m^{2}

Radius given

A re a = 81 π : r = 9

Circle Diameter given

r = 9 : d = 18

d iam e t er : 18 c m

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