Question

What is the length of the altitude of the equilateral triangle below?

A. /240
B. 144
C. 12
D. 4
E. 12/3
F. 4/3

Answer 1

A

Explanation:

Using Pythagoras' identity in either of the 2 right triangles

a² = (4
`√(3)` )² + (8
`√(3)` )² = 48 + 192 = 240 ( take square root of both sides )

a =
`√(240)` → A

Answer 2

its C option which is 12