Question

if its perimeter of an equilateral traingle is 180 cm what will be its area???

Answer 1

PERIMETER = 3 a = 180
a = 180/3
a = 60 cm

AREA =
$\frac{ \sqrt{3} }{4} \times a {}^{2}$ =
$\frac{ \sqrt{3} }{4} \times 60 \times 60 = \sqrt{3} \times 15 \times 60 \\ = 900 \sqrt{3}$
= 900 * 1.71 = 1539 cm ^2

Answer 2

Here is your answer it may help you....