Question

The perimeter P of a rectangle is P=2l+2w, where l and w are the rectangle’s length and width, respectively.

Solve the formula for l, the length

Answer 1

Explanation:

The length of the rectangle is represented as L

The width of the rectangle is represented as W

The perimeter of the rectangle is represented as P

The perimeter P of a rectangle is

P = 2L + 2W

We want to make the length, L the subject of the formula. It becomes

Subtracting 2W from both sides of the equation, it becomes

P - 2W = 2L + 2W - 2W

P - 2W = 2L

Dividing both sides of the equation by L, it becomes

L = (P - 2W)/2