Question

The formula for perimeter of a rectangular field is P = 2L + 2W.

Find the length of the field if the perimeter is 24m and the width is 5m.

Answer 1

The length is 7 meters

Explanation:

Formula: P = 2L + 2W

Plug in 24 for the perimeter and 5 for the width

New equation: 24 = 2L + 2(5)

Simplify: 24 = 2L + 10

Subtract 10 from both sides: 24 - 10 = 2L + 10 - 10

Simplify: 14 = 2L

Divide both sides by 2: L = 7

Answer: L = 7