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If the area of a circle is 81π, then what is the diameter of the circle?​
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If the area of a circle is 81π, then what is the diameter of the circle?​

User Gian
by
5.6k points

1 Answer

6 votes

Answer:

18

Explanation:

81π=πr^2

r= 9,-9

9+9=18

User RealDeepak
by
5.1k points
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