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