SOLUTION: A circular pen has an area of 64 times 3.14 square yards. What is the circumference of the pen?

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Question 949076: A circular pen has an area of 64 times 3.14 square yards. What is the circumference of the pen?
Answer by macston(5194) About Me  (Show Source):
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A circular pen has an area of 64 times 3.14 square yards. What is the circumference of the pen?
Area=pi%28r%5E2%29=pi%2864sq+yds%29 so 64 is r^2, and r=8 yds
Circumference=pi%282r%29=pi%282%2A8yds%29=pi%2816yds%29
ANSWER: The circumference is 16pi yds or approximately 50.3 yds.