Question

Area of an equilateral triangle is 81root3 cm^2.then its height

Answer 1

check your answer on the image I have attached.

Answer 2

Area of an equilateral triangle =root3/4 side^2
81(root3)=root3/4 side^2
81×4=side^2
Side=18
Now area of triangle =1/2 ×base ×height
81root3cm^2=1/2 ×18×h
Height =9root3 cm