The sides of the rectangle are 3dm., 9cm. find the perimeter and area.

univerkov | January 3, 2021 | education

First, let’s translate 3 dm into centimeters:
3 dm = 30 cm (1 dm = 10 cm)
Recall the formulas for the area and perimeter of a rectangle
S = ab
P = 2 (a + b)
substitute these values:
S = 30 * 9 = 270 cm ^ 2
P = 2 (30 + 9) = 2 * 39 = 78 cm

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