The length and width of the rectangle together are 1dm, and the width is 4cm. Find the area of this rectangle?
| September 5, 2021 | education
The semi-perimeter of a rectangle, that is, its length and width together are 1 dm, but, according to the specification, the width is 4 cm.Let’s find the length:
x + 4 = 10. (assuming that 1 dm = 10 cm).
The first term is the difference between the sum and the second:
x = 10 – 4 = 6 cm.
The area of the rectangle is calculated by the formula:
S = a * b = 4 * 6 = 24 cm².
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