The perimeter of the rectangle is 40.2 m, and its length is 2.3 m longer than the width. Find the area of the rectangle.
July 27, 2021 | education
| 1) Let x m be the width of the rectangle.
2) Then (x + 2.3) m is its length.
3) (2x + 2 * (x + 2.3)) m is the perimeter of a given rectangle, which, according to the condition of the problem, is 40.2 m.Therefore, we write the equality:
2x + 2 * (x + 2.3) = 40.2.
4) Solve the equation and find the value of x:
2x + 2x + 4.6 = 40.2;
4x + 4.6 = 40.2;
4x = 40.2 – 4.6;
4x = 35.6;
x = 35.6: 4;
x = 8.9.
5) We find that x = 8.9 m – the width of the rectangle.
6) Let’s calculate its length:
8.9 + 2.3 = 11.2 m.
7) Calculate the area of this rectangle:
11.2 * 8.9 = 99.68 m ^ 2.
Answer: 99.68 m ^ 2.
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