Answered

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A billard ball has a surface area of 84 square centimeters. What is the radius of the ball?​

Sagot :

Answer: √21/√pi

Step-by-step explanation: Surface area of ball is 4(pi)r^2. Divide 84 by 4 and get 21. Dividing 21 by pi and taking the square root therefore is the answer.

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