Question

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length?(2 points)
Responses

36 inches
36 inches

21 inches
21 inches

30 inches
30 inches

15 inches

Answer 1

The formula for the perimeter of a rectangle is P = 2L + 2W, where P is the perimeter, L is the length, and W is the width.

Given that the width is 6 inches and the perimeter is 42 inches, we can substitute these values into the formula:

42 = 2L + 2(6)

Simplifying the equation, we get:

42 = 2L + 12

Subtracting 12 from both sides:

30 = 2L

Dividing both sides by 2:

15 = L

Therefore, the length of the rectangle is 15 inches.