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29 June, 23:28

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

+1
Answers (2)
  1. 29 June, 23:30
    0
    P=2 (L+W)

    120=2 (L+W)

    divide by 2

    60=L+W

    base=L

    height=W

    L is 3 times W

    L=3W

    60=3W+W

    60=4W

    divide by 4

    15=W

    sub back

    L=3W

    L=3 (15)

    L=45

    15 by 45

    the 2nd option (yo messed up with the lettering of choices, a, c, b, d)
  2. 29 June, 23:51
    0
    The answer is C. h = 15 cm, b = 45 cm
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