Question

The area of one rectangle is 36 Square feet. The area of a second rectangle is 21 square feet. The rectangles have the same width and the dimensions are whole numbers. What is the width of both rectangles?

Answer 1

I think we need the high to measure the width

Explanation:

since the two rectangles have the same widths but they have different hights.

suppose :

the width equal `x`

the high of rectangle one equal `y`

the high of rectangle two equal `z`

the area of the rectangle given by `A=width*high`

`color(red)[A_1=x*y rArr 36=x*y rArr x=36/y]`

`color(blue)[A_2=x*z rArr 21=x*z rArr x=21/z`