Question

plzz solve it in brief..... plzzz... it's urgent​

Answer 1

Answer:

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Answer 2

Answer:

perimeter = 180 cm

Since, it's an equilateral triangle, length and area of all sides will be equal.

So,

take each side as 'a'

a+a+a = 180°

3a = 180°

a = 60°

each side = 60°

According to herons formula,

area of equilateral triangle = (√3 a²) / 4

= (√3*60²)/4

= 360√3 / 4

= 90√3 cm²

hope it helps.... ☺