LIn lines the bottom of her first pan with aluminum foil. The area of the rectangle piece of foil is 11 1/4 square inches. Its length is 4 1/2 inches what is the width of the foli.

Answer 1

To find the area of a rectangle, we multiply the length by the width:

A = l * w

Since the area is 11 1/4 or 45/4 inches and the length is 4 1/2 or 9/2 inches, we can write:

45/4 = 9/2 * w

To solve, divide 45/4 by 9/2. This is accomplished by multiplying 45/4 by the reciprocal of 9/2 or 2/9:

45/4 * 2/9 = w

5/2 inches = w

So the width is 2 1/2 inches.