If each side of an equilateral triangle is 12 cm, then its altitude is equal to:
Answer & explanation
Correct answer: option 3
Given,
The side of a equilateral triangle = 12cm
then the height or altitude = \(\frac{\sqrt {3}}{2}\) × (side)
= \(\frac{\sqrt {3}}{2}\) × (12) = $6\sqrt{3}$ cm