Question

If the perimeter of an equilateral triangle is 30cm then find out the area.

Answer 1

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Answer 2

Answer:

perimeter of triangle=30

(3*one side of triangle)

= one side= 30/3

=10 cm

Step-by-step explanation:

___________

area= √s(s-a)(s-b)(s-c)

a+b+c

s=. -----------

2

30

s=. -------

2

s=15

_________________

area=√15(15-10)(15-10)(15-10)

_______

=√15*5*5*5

________

=√ 3*5*5*5*5

__

= 5*5√3

__

=25√ 3....... Ans:-

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