The sides of the rectangle are 9cm and 3dm. What is the perimeter of the rectangle?
| December 12, 2020 | education
The perimeter of a rectangle is the sum of the sides multiplied by two. P = (a + b) • 2;
a = 9 cm, b = 3 dm, and this is 30 cm, we substitute it into the formula and we get, P = 39 • 2 = 78.
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