Question

What is the length of the side of an equilateral triangle, if its area is 64√3 sq cm?

Options:

1) 8 cm

2) 16 cm

3) 16√3 cm

4) 8√3 cm

Answer 1

a = √3/4 a^ = 64√3
a^/4 = 64
a = 16 cm
2 answer

Answer 2

area = root3/4a^2
so;
√3/4a^2=64√3
then, except a^2 bring all no's to right from left...

a^2=64√3×4/√3
√3 will cancel so,
64×4= 256
a^2=256
a=√256
a=16cm.


option 2 is correct......