Question

OPEN CHALLENGE !!!

SOLVE THIS.


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Answer 1

Answer:

Step-by-step explanation:

All sides of equilateral triangle are equal so AB=BC=AC=a cm

Perimeter= 180cm

3a=180cm

A =180/3 =60cm

In triangle ABC,

Semi perimeter= Perimeter/2

=180/2

=90cm

Area=√s(s-a)(s-b)(s-c)

=√90(90-60)(90-60)(90-60)

=√90×30×30×30

=√3×30×30×30×30

=30×30√3

=900√3 cm

Answer 2

Step-by-step explanation:

All sides of equilateral triangle are equal so AB=BC=AC=a cm

Perimeter= 180cm

3a=180cm

A =180/3 =60cm

In triangle ABC,

Semi perimeter= Perimeter/2

=180/2

=90cm

Area=√s(s-a)(s-b)(s-c)

=√90(90-60)(90-60)(90-60)

=√90×30×30×30

=√3×30×30×30×30

=30×30√3

=900√3 cm