Let

the length and

the width. By the ratio of the sides:

Now, we'll find the perimeter p. We'll use the formula below:

The area of a rectangle is

. Then:
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Answer:
6
Step-by-step explanation:
Not bad, i can read it. Mines worse xd
Length x width x height
4 x 5 = 20
20 x 6 = 120 cm^3