A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the field is 680 sq. feet, how many feet of fencing will be required?  Choose the correct option:
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 = 680   Breadth = 34 feet   Area to be fenced = 2B + L = 2 (34) + 20 = 88 feet answer : 88
<result>D</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 680 sq. feet, how many feet of fencing will be required?