An equilateral triangle has a side 2 cm. Calculate the height of the triangle.
- 5cm
- \(\sqrt5\)cm
- 3cm
-
\(\sqrt{ 3}\)cm
The correct answer is: D
Explanation
using Pythagoras theorem
H = \(\sqrt{ 2^2 - 1^2}\)
= \(\sqrt{ 4 - 1}\)
= \(\sqrt3\)cm