Question

calculate the area and height of an equilateral triangle whose perimeter is 60 centimetre

Answer 1

If the Triangle is equilateral then sides are 60/3
that's 20 cm each
then,
Area of this equilateral triangle
= (√3 /4) × 20^2
= 100√3 sq.cm

and Height = (√3 /2) × 20 =10√3 cm
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Hope it helps.......