Question

If the area of a equilateral triangle is 81root3 cm? Find its perimeter?

Answer 1

hey mate here is ur answer...
area of equilateral triangle =81√3
√3/4×a^2=81√3
a^2=81√3/×4/√3
a^2 =81×4
a^2=324
a=√324
a=18
perimeter of triangle is = 3a
=3×18
=54
hope it will helpful ......
thankuuuuuuu...
be brainly .

Answer 2

area of equilateral triangle = √3/4×a^2
81√3=√3/4×a^2
81√3×4/√3=a^2
√324=a
a=18 cm
perimeter of equilateral triangle is 3×a
so that ,
3×18=54cm