Find one of the sides of the rectangle:
a = 66 * 3/11 = 18 dm;
Let’s write down the formula for finding the perimeter and express the length of the second side:
P = 2 (a + b);
2 (18 + b) = 66;
18 + b = 33;
b = 33-18;
b = 15 dm;
Let’s write down the formula for finding the area of a rectangle:
S = a * b;
Substitute the known values and calculate the area:
S = 15 * 18 = 270 dm2.
Answer: 270 dm2.
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