Question

11. If the area of an equilateral triangle is 36V3 cm?, find its perimet
12. If the area of an equilateral triangle is 81√3 cm, find its height.​

Answer 1

Answer: question 11

Area of equilateral triangle is √3/4 a^2

now, according to question

36√3=√3/4a^2

36=a^2/4

36*4=a^2

√144 =a

a=12

perimeter =3a

= 3*12

=36

answer