Question

Find the area of an equilateral triangle
Circumference
of 18
centimeters​

Answer 1

Step-by-step explanation:

circumference of triangle= a+b+c

(here a,b,c are the sides of triangle)

a+b+c=18 (given) -------> equation 1

In equilateral triangle all the sides of triangle are equal

So,

3a= 18

a=6

Areaa of equilateral triangle= √3/4*a*a

=√3/4*6*6

=15.39