The area of a rectangle is 525 square centimeters. The ratio of the length to the width is 7 : 3. Find the length and the width.

Answer 1

Length = 7x and width = 3x

So, (7x)(3x) = 525

21x² = 525

x² = 25

x = 5

Therefore, length = 7(5) = 35 cm and width = 3(5) = 15 cm.