The perimeter of the rectangle is 12.8 cm, and one of its sides is 2.4 cm smaller than the other. Find the area of the rectangle.

univerkov | September 3, 2021 | education

x cm – one side
(x-2.4) cm – second side
x + (x-2.4) * 2 = 12.8; (2x-2.4) * 2 = 12.8; 4x-4.8 = 12.8; 4x = 17.6; x = 4.4 cm – one side;
4.4-2.4 = 2 cm – the second
4.4 * 2 = 8.8 cm2 – area

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