Question

nd the altitude of an equilateral triangle, if each side of the triangle has a length of 20 meters.


A)
10
3
meters


B)
10
2
meters


C)
10
5
meters


D)
10 meters

Answer 1

There should be a square root sign over the 3 in A, the 2 in B, and the 5 in C

Answer 2

use the formula :
altitude = 1/2 * side * sqrt(3)

(just for equilateral triangle only)