Let’s denote by the unknown variable x centimeters – one side of the rectangle,
Then 15x centimeters is the second side of the rectangle,
Knowing the perimeter, we compose the equation:
2 * (x + 15x) = 19.2;
32x = 19.2;
x = 0.6 centimeters – one side of the rectangle,
0.6 * 15 = 9 centimeters – the second side of the rectangle,
The area of a rectangle is equal to the product of its sides: 0.6 * 9 = 5.4 square centimeters.
Answer: The area of the rectangle is 5.4 square centimeters.
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