A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 720 sq. feet, how many feet of fencing will be required?	Choose the correct choice from the following.
A) 34	B) 40	C) 68	D) 88	E) 92
Given that length and area, so we can find the breadth.   Length x Breadth = Area   20 x Breadth = 720   Breadth = 36 feet   Area to be fenced = 2B + L = 2 (36) + 20 = 92 feet answer : 92
<result>E</result>
A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 720 sq. feet, how many feet of fencing will be required?