The area of a rectangle is equal to the area of another rectangle. The length of the first rectangle is 18 cm

The area of a rectangle is equal to the area of another rectangle. The length of the first rectangle is 18 cm and the width is 15. What is the width of the second rectangle if its length is 27 cm?

Decision.

1. Formula of the area of a rectangle: S = a * b, where a – length, b – width. Find the area of the first rectangle:

S = 18 * 15 = 270 (cm ^ 2).

2. Knowing that the areas of both rectangles are equal, and the length of the second rectangle, we find its width:

270 = 27 * b;

b = 270/27 = 10 (cm).

Answer: the width of the second rectangle is 10 cm.