The perimeter of the rectangle is 40 cm. Find its width if the length is 11 cm.
| March 30, 2021 | education
The perimeter of a rectangle is calculated as the sum of its length and width times two.
Let’s calculate the semi-perimeter of the rectangle:
1) 40 cm: 2 = 20 centimeters.
The second step is to calculate the width of the rectangle:
2) 20 cm – 11 cm = 9 centimeters.
Answer: the width of the rectangle is 9 centimeters.
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