The perimeter of an isosceles triangle is 15.6 cm. Its base is 3 cm larger than the lateral side. Find the sides of the triangle.

univerkov | April 5, 2021 | education

Let the sides be equal to a; but; m (a + 3) cm, its perimeter p – a + a + a + 3 = 3 * a + 3 = 15.6, whence a = (15.6 – 3) / 3 = 12.6 / 3 = 4 , 2 cm.
Triangle sides: 4.2 cm; 4.2 cm; 7.2 cm.

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