Question

if the perimeter of an equilatrel triangle is 180cm,
What will be it's area? ​

Answer 1

Answer:

A≈1558.85cm²

Step-by-step explanation:

By giving question the perimeter is 180

So,we will find the side of this triangle

Perimeter= 3 X side

180=3 X side  

Side =180/3

Side = 60

Now the area of a equilateral triangle is  

A= (√3/4)(side)^2

A=(√3/4)(60)^2  

A=(√3/4)(3600)

A=(√3)900  

A=(1.7320)900. ( The value of √3 is 1.7320)

A=1558.85 cm^2.

HOPE THIS HELPS

 

Answer 2

Answer:

1200√3 cm^2

Step-by-step explanation:

perimeter=180cm

=3×side=180

=side=60cm

now,

area of equilateral triangle=√3/4(side)^2

=√3/4×(60)^2

=√3/4×60×60

=√3×1200

=1200√3. cm^2 ans.