Question

The area of a rectangle is 8w+18 Use your width expression to find the length of the rectangle when w=1.25feet show your work

Answer 1

ANSWER

22.4 feet

EXPLANATION

The area of a rectangle is the product of its length and width,

$A=l\cdot w$

We know that the area of this rectangle is 8w+18,

$8w+18=l\cdot w$

Divide both sides by w to solve for l,

$l=\frac{8w+18}{w}$

We have to solve this for w = 1.25 ft,

$l=\frac{8\cdot1.25ft+18}{1.25ft}=22.4ft$

Hence, the length of the rectangle is 22.4 feet.