Question

You install 500 feet of invisible fencing along the perimeter of a rectangular yard. The width of the years is 100 feet. what is the length of the yard?

Answer 1

perimeter of rectangle=2(l+b)
500=2(l+100)
250=l+100
l=150

Answer 2

You install 500 feet of invisible fencing along the perimeter of a rectangular yard. The width of the years is 100 feet. what is the length of the yard?

= 150

SOLUTION

The perimeter of a rectangle is P = 2L + 2W

Given

P = 500 ft

W = 100ft

L = ???

2L + 2 (100) = 500

2L + 200 = 500

2L = 300

L = 150 ft