Question

If an equilateral triangle have side 3√3 cm, then the length of the its altitude is what?​

Answer 1

Answer:

A = √3/2 a²

A= √3/2 (3√3)²

A = √3/2 * 27

A = 27√3 / 2

also A = 1/2*b*h

27√3/2 = 1/2 * 3√3 * h

h = (27√3/2 * 2)/3√3

h = (27 √3)/3√3

h = 9 cm