Find the width of a rectangle with a perimeter of 90 and a length of 15

Question

A. 90
B. 15
C.45
D. 30

Answer 1

To find the width of the rectangle, we need to use the formula for the perimeter of a rectangle, which is 2(Length + Width).

Given:
Perimeter = 90
Length = 15

Let's substitute these values into the formula and solve for the width.

90 = 2(15 + Width)

Simplify the equation by distributing 2 to both terms inside the parentheses.

90 = 30 + 2Width

Subtract 30 from both sides of the equation.

90 - 30 = 30 - 30 + 2Width

60 = 2Width

Divide both sides of the equation by 2.

60 / 2 = 2Width / 2

30 = Width

The width of the rectangle is 30.

Therefore, the correct answer is D. 30.