The longest side of a triangle is 3 times the shortest side and the third side is 2 cm shorter than the longest side. If the perimeter of the triangle is at least 61 cm, find the minimum length of the shortest side.

Asked by Pragya Singh | 1 year ago |  67

1 Answer

Solution :-

Let us assume the length of the shortest side of the triangle be x cm

According to the question, length of the longest side = 3x cm

And, length of third side = (3x – 2) cm

As, the least perimeter of the triangle = 61 cm

Thus, x + 3x + (3x – 2) cm ≥ 61 cm

= 7x – 2 ≥ 61

= 7x ≥ 63

Now divide by 7 we get

\( \dfrac{7x}{7} ≥\dfrac{63}{7}\)

= x ≥ 9

Hence, the minimum length of the shortest side will be 9 cm

Answered by Abhisek | 1 year ago

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