A rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered. If the area of the… · ABC26GN4317
Subject: General Aptitude · Chapter: Area
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?
(a)34
(b)40
(c)68
(d)88
Answer
No answer key was printed for this question.
Explanation
We have : $l=20 \mathrm{ft}$ and $l b=680 \mathrm{sq}$. ft. So, $b=34 \mathrm{ft}$. ∴ Length of fencing $=(l+2 b)=(20+68) \mathrm{ft}=88 \mathrm{ft}$.
Explanation as extracted from the printed page; notation may be imperfect.