Question

the perimeter of an isosceles triangle is 45 cm. if the length of the non-congruent side is half the length of the congruent sides, find the length of the congruent sides

Answer 1

Answer:

18 cm

Step-by-step explanation:

Let the length of the non congruent side be x.

Hence, length of each congruent side will be 2x.

Perimeter of a triangle = Sum if lengths of all sides.

As given,

2x + x + 2x = 45 cm

5x = 45 cm

x = 9 cm

Hence, length of each congruent side:

2x = 2× 9 = 18 cm

Answer 2

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