If the side of an equilateral triangle is 10 cm, what is its altitude?

A5*sqrt(3) cm

B10*sqrt(3) cm

C15 cm

D5 cm

Explanation

Altitude = (sqrt(3) / 2) * side = (sqrt(3) / 2) * 10 = 5*sqrt(3) cm.

Exam Relevance

Topic: Geometry & Mensuration
Subtopic: Triangles

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