Question 949076
A circular pen has an area of 64 times 3.14 square yards. What is the circumference of the pen?
{{{Area=pi(r^2)}}}={{{pi(64sq yds)}}} so 64 is r^2, and r=8 yds
{{{Circumference=pi(2r)}}}={{{pi(2*8yds)}}}={{{pi(16yds)}}}
ANSWER: The circumference is 16pi yds or approximately 50.3 yds.