The ratio of the width to the length of a rectangle is 3: 7. the shorter side is 9 inches long. what is the longer side and also the area of the rectangle? show your work.

Take the length of the shortest side divide that by the ratio of the shortest side 9/3 =3

Take that number 3 and multiply it by seven.
3*7=21

The shorter side is 9 inches, and the longer side is 21 inches.

To find the area, multiply 21 by 9.
The area is 189 inches