if the area of an equilateral triangle is 81root3cm find its height
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1.5cm is the answer of the questions.
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area of equilateral triangle = 81√3 cm
√3a²/4 = 81√3 cm
a² = 81√3 × 4/√3 cm
a² = 81 × 4 cm
a² = 324 cm
a = √324 cm
a = 18 cm
we know that height of the equilateral triangle is
= √3a/2
= √3 × 18 /2
=√3 × 9
= 9√3
√3a²/4 = 81√3 cm
a² = 81√3 × 4/√3 cm
a² = 81 × 4 cm
a² = 324 cm
a = √324 cm
a = 18 cm
we know that height of the equilateral triangle is
= √3a/2
= √3 × 18 /2
=√3 × 9
= 9√3
9552688731:
here a refers to the side of the triangle
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