Question

Find the area of a equilateral triangle of perimeter 30cm

Answer 1

hi mate

here is your answer

We know,

In an equilateral triangle the all sides are equal.

hence, Perimeter =3 ×side

=30 =3×s

= x = 10cm

So now we have get

Side of triangle=10cm

Remember, Area of traingle

$\sqrt{3} \div 4 \times side ^{2}$

So, area =

$( \sqrt{3} \div 4) \times 10 \times 10$

i.e area =root3 ×100/4

i.e area= root3× 25

i.e area=43.301cm^2 ( approx )

hope it helps

BE BRAINLY