The area of the rectangle is 56 dm2, the length is 7 dm2. Calculate the perimeter of this rectangle.

Let’s find the length of the rectangle:
(for this we divide the area of the rectangle by its length)
56: 7 = 8 (dm2)
Find the perimeter of the rectangle:
(for this we use the formula for finding the perimeter of a rectangle P = (a + b) * 2)
P = (8 + 7) * 2 = 15 * 2 = 30 (dm).
Answer: The perimeter of the rectangle is 30 decimeters.

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