Question

Each equal side of an equilateral triangle is 12 cm . Find its area and its artitude.

Answer 1

Formula of area of equilateral triangle is

3^(1/2)/4*side^2

Here

Area of triangle is 3^(1/2)/4*(12)^2  i.e. 3^(1/2)/4*12*12= 36* 3^(1/2)

i.e. 36 root 3

and formula of altitude is=3^(1/2)/2*side i.e3^(1/2)/2*12=6*3^(1/2)

i.e. 6 root three