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?A. 95B. 92C. 88D. 82

Answer : Option C

Explanation :

Given that area of the field = 680 sq. feet
=> lb = 680 sq. feet

Length(l) = 20 feet

=> 20 × b = 680

B=680/20=34 feet

Required length of the fencing = l + 2b = 20 + (2 × 34) = 88 feet

It is Option C. - 88

opoction  _c       88

option c 88