Question

If the perimeter of an equilateral
triangle is 180 cm. Then its area will
be: *​

Answer 1

Answer:

60 cm will be the right answer

Answer 2

Answer:

perimeter of equilateral triangle=3a

180cm=3a

180cm/3=a

60cm=a

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

=

$( \frac{ \sqrt{3} }{4} ) \times {60}^{2} \\ \frac{ \sqrt{3} }{4} \times 15 \times 60 \\ \sqrt{3} \times 15 \times 60 \\ 900 \sqrt{3} {cm}^{2}$