Question

Chloe is painting on a stretched canvas that has an area of 108 square inches. The length of the canvas is 12 inches.
The width of the canvas is ___ inches. Chloe paints a 1-inch-wide blue border on the canvas. The area left for painting after painting the border is ___ square inches.

Answer 1

so i think you missed details here and the question ...

Answer 2

area = length*width

you are given area and length, solve for width

now, try drawing out the canvas, with a 1 inch border



notice how the width and length of the paint-able area are each 2 inches less than the original width and length. calculate the paint-able area after the border is added.