If the area of a circle is 49pi square feet, find its circumference. Choose the correct choice from the following answers.
A) 14 pi feet  B) 28 pi feet  C) 38 pi feet  D) 48 pi feet  E) 58 pi feet
The area is given by pi *r* r. Hence   pi * r *r = 49 pi   r * r = 49; hence r = 49 feet   The circumference is given by   2 * pi * r = 2 * pi * 7 = 14 pi feet   correct answer 14 pi feet
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If the area of a circle is 49pi square feet, find its circumference.