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by thestartupguy » Thu Sep 01, 2011 11:43 am
IMO: A
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by jbivins » Thu Sep 01, 2011 12:21 pm
from observation you know that arc OP will equal arc QR. If we can find those length we can subtract them from half of the circumference and find the arc PQ

so arc OP = 2(pi)(9)(70/360)=7/2 (pi) double the 35
arc OP+arc QR = 2 arc OP= 14/2 (pi)=7 pi

half the circumference of the entire circle is (180/360)*2*(pi)*9=9(pi)

arc PQ = 9(pi)-7(pi) = [spoiler]A 2 (pi)[/spoiler]
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