Question

5. If its perimeter of an equilateral triangle is 180 cm, what will be its area?​

Answer 1

perimeter of equilateral triangle = 180cm

side of equilateral triangle = 180 ÷ 3 = 60

area of triangle = 1/2 × base × height

base = 60

height = 60

1/2 × 60 × 60

30 × 60

1800cm2

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