Question

A rectangle has an area of

135 ft2. What is the length if
the width is 9 ft?

Variable: ___________________

Equation: ___________________

Answer 1

Answer: Length is 15 ft.

Explanation:

Area of a rectangle is length times width. The problem gives you the area and width. If you put that into the equation (A = wl), you get 135 = 9l. Divide 9 from both sides. You get 15 = l. So l = 15 ft.

Your solved variable is 15. And your original equation was A = w*l. The completed (which is already solved) equation can be written as 135 ft^2 = 9ft x 15ft.

Answer 2

Variable X = length

Equation: 9X = 135

= 45