Question

James fences in his backyard. The perimeter of his fence is 20 feet, and the width of his yard is 2 feet wide. Use the perimeter formula to find the length of his rectangular yard in INCHES: P = 2L + 2W

Answer 1

96 inches

Explanation:

Because we already have the perimeter, we have to solve the formula for L (length). To do this, simply subtract 2W (width) from both sides so that we're left with 2L by itself. The formula is now 2L= P-2W. When we plug in the numbers we get 2L= 20'-2(2'). All we have to do is solve for L.

2L= 20'-4'

2L=16'

`(2L)/(2)`=
`(16)/(2)`

L=8'

We need the answer to be in inches, so multiply 8(12) to get 96''