Question

each of the two equal sides of an isosceles triangle is three times as large as the third side.
If the perimeter of the triangle is 28 cm, find each side of the triangle​

Answer 1

$3x + 3x + x = 28 \\ 7x = 28 \\ x = 4 \\ thus \: equal \: sides \: are \: equal \: to \: 3x = 12 \\ 3rd \: side \: equal \: to \: x = 4$

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