Question

The perimeter of a rectangle is 120 centimeters. The base is 3 times the height. What are the dimensions of the rectangle? a. h = 9cm, b = 18 cm c. h = 15 cm, b = 45 cm b. h = 19 cm, b = 57 cm d. h = 10 cm, b = 15 cm Please select the best answer from the choices provided A B C D

Answer 1

base = 45

height = 15

Explanation:

p = 2 ( b + h)

p=120

b = 3h

120 = 2 (3h + h)

120 = 8h

h = 15

120 = 2 (b+ 15)

120 = 2b + 30

90 = 2b

45 = b