A rectangular field has 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 choice from the following answers
A) 88 Feet
B) 66 Feet
C) 77 Feet
D) 99 Feet
E) 55 Feet
A   88 Feet   Area of the field =680 sq. feet.   Length of the adjacent sides are   20 feet and  680/20= 
<gadget id="calculator"> 680/20</gadget>
<output>34</output>
34 feet.   Required length of the fencing=20+34+34= 
<gadget id="calculator">20+34+34</gadget>
<output>88</output>
88 feet
<result>A</result>
A rectangular field has 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?