A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?	Choose the correct answer
A) 32  B) 36.5  C) 38.5  D) 39  E) 39.5

Rationale: area covered by goat = pi * r ^ 2 / 4 ( here we divide by 4 because rope is tied at the corner of the plot and only 1 / 4 part , the goat can graze ) where r = 7 m = length of rope so area = ( 22 / 7 ) * 7 * 7 / 4 = 38.5 sq m answer : c
Answer: C