Question

The area of an equilateral triangle is 15√3 cm

2

. Find the length of its

side and the perimeter.​

Answer 1

Answer:

The area of equilateral triangle is 9

3

cm

2

Since, the area of equilateral triangle is

=

4

3

a

2

Therefore,

4

3

a

2

=9

3

a

2

=9×4

a

2

=36

a=6cm

Hence, the side of the triangle is 6cm.