If the length of side of an equilateral triangle is 4cm. its height is -
A
2 √3
B
4 √3
C
16 √3
D
32 √3
Correct Answer: 2 √3
let, the hight is X By applying Pythagoras Theorem, X^2 + 2^2 = 4^2 X^2 = 16 - 4 X = √12 X = 2√3 cm So, the height is 2√3 cm. (ans)