side of equilateral triangle is 9cm then its altitude is________
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Side of equilateral triangle = 9 cm.
Therefore,
Altitude of equilateral triangle = √3/2 × a
=> √3/2 × 9
=> 9√3/2 cm
Therefore,
Altitude of equilateral triangle = √3/2 × a
=> √3/2 × 9
=> 9√3/2 cm
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