Question

The area of a rectangle is 8 square feet.

If the length of the rectangle is 4 feet,
what is the width of the rectangle?
Use the formula A = L x W

Answer 1

11.38ft

Explanation:

L = 4 + 2 WArea = 42 = L x W = ( 4 + 2W ) x W 42= 4W + 2W(W) = 4W + 2W^2 or 2W^2 + 4W -42 = 0 Solve this quadratic equation via the quadratic formula. There is only one positive answer for W. Answers: W= 3.69 feet L = 4 + 2W = 11.38 feet

Answer 2

you just substitute 8 for the area then substitute 4 for the length and divide. So the answer would be 2.