If area of an eqilateral triangle is 36^3cm2.then find its height.?
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Area of equilateral triangle = √3/4 (side)²
√3/4 (side)² = 36√3
(side)² = 36 × 4
= 9 × 4 ×4
= (4 × 3)²
side = 12cm
perimeter = 3 × side
= 3 × 12
= 36cm
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