Question: a rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered . if the area of the field is 650 sq . feet , how many feet of fencing will be required ?
A) 34
B) 40
C) 85
D) 88
E) none
Correct answer: c
Grade: 7 | Topic: Geometry | Difficulty: Medium | Standard: 7.G.B.6