Find the perimeter of the rectangle if its Width is 8 dm and its length is 15 cm.

1dm = 10 cm;

Let’s express the width of the rectangle in decimeters:

a = 8 dm = 8 * 10 cm = 80 cm;

The area of a rectangle is equal to the product of its sides:

S = a * b;

S = 80 cm * 15 cm = 1200 cm²;

Let’s express the result in decimetres:

S = 1200 cm² = 1200/10 dm² = 120 dm².

Answer: 120 dm²

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