Question

If the perimeter of an equilateral triangle is 60 cm, then what is its area?

Answer 1

P=60/3
=20
a+b=c
C-b=a
40p-100=root 300
100root3

Answer 2

Hello! The Perimeter is = 60cm
1 side = 60/3 = 20 cm
√s(s-a)(s-b)(s-c)s(s−a)(s−b)(s−c)

s = 30

√30(30-20)(30-20)(30-20)

=√30×10×10×10=√30000cm²

The Area is = 100√3 cm²