Question

The perimeter of equilateral triangle is 60cm,the area is​

Answer 1

Answer:

Perimeter = 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 = 100√3 cm²

Answer 2

here perimeter =60

30=60cm

a=20cm

now the area of triangle =√3/4*[20]²

=400√3/4

100√3cm² =ANSWER