The ratio of the lengths of the sides of the rectangle is 4: 5 find the area of this rectangle

The ratio of the lengths of the sides of the rectangle is 4: 5 find the area of this rectangle if the length of the larger side is 20 cm

The large side of the rectangle is 5 parts, and its length, according to the condition of the problem, is 20 centimeters. The first step is to find how many centimeters are in one part. 1) 20: 5 = 4 centimeters are in one part. 2) 4 * 4 = 16 centimeters – the smaller side of the rectangle. 3) 20 * 16 = 320 square centimeters – the area of a rectangle with sides of 20 centimeters and 16 centimeters.
Answer: 320 square centimeters.