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

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