# The rectangle is 9m wide and 12m long. Find the width of the second rectangle if its length is 18m

January 13, 2021 | education

| **The rectangle is 9m wide and 12m long. Find the width of the second rectangle if its length is 18m, and the areas of these rectangles are equal.**

1) First of all, we find the area of the first rectangle with sides of 9 m and 12 m, multiplying the length of the rectangle by its width:

S = 9 * 12 = 108 (m²).

2) By the condition of the problem, the area of the first rectangle is equal to the area of the second rectangle, that is, the area of the second rectangle is 108 m². Find the width of the second rectangle if its length is 18 m.To do this, divide the area by the length:

108: 18 = 6 (m).

Answer: The width of the second rectangle is 6 m.

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