Question

A city is building a fence around a rectangular playground. If the perimeter of the playground is 92 feet and the length of one side of the fence is 28 feet, what is the width of the playground? A. 36 feet B. 46 feet C. 18 feet D. 64 feet

Answer 1

You should use the general formula for the perimeter of a rectangle which would be p=2(l+w). We then substitute 92 for the perimeter and 28 for the length. We now have 92=2(28+w). following this, we have 46=28+w and then w=18. The width is 18 feet so C is the answer.
I think this is right.

Answer 2

Perimeter of a rectangle=2(length)+2(widh)

Data:
Perimeter=92 feet
length=28 ft

therefore:
92 feet=2(28 feet)+2(width)
2(width)=92 feet-56 feet
2 (width)=36 feet
width=36 feet/2
width=18 feet.


Answer: C. 18 feet.