Choose the correct calculation of the perimeter of a rectangle whose length is 4 cm and width is 5 cm.
| May 4, 2021 | education
The perimeter is the sum of the lengths of all sides. In this case, if we talk about a rectangle, the perimeter can be calculated in several ways:
(a + b) 2 or a 2 + b 2 or a + a + b + b.
The first method is by far the most convenient. We will use it: (4 + 5) 2 = 18 cm.
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