The perimeter of the rectangle ABCD is 40dm. The length of the rectangle is 12 cm. Find the width of the rectangle.
| September 5, 2021 | education
1. Let’s translate the length of the rectangle in dm:
12 cm = 1.2 in.
2. Calculate the width by the formula a = P / 2 – b, where P is the perimeter of a rectangle with length and width a and b, find the width a:
a = 40/2 – 1.2 = 20 – 1.2 = 18.8 dm.
Answer: The width of the rectangle is 18.8 in.
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