Question

If its perimeter of an unilateral triangle is 120 cm, ,what will be its area

Answer 1

Hi friend ✋✋✋✋
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Your answer
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I thin you mean equilateral triangle.

So,
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Perimeter of the equilateral triangle = 120 cm

Then, Measure of each of its sides = 120/3 cm = 40 cm

Now,
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Area of a equilateral triangle = √3/4 × (side)²

= (√3/4 × 40 × 40) cm²

= 400√3 cm²

HOPE IT HELPS