Question

AB=BC=4
m(ABC)= 60 grade

aflati aria tri. ABC

Answer 1

$S_{ABC}=\frac{AB*BC*\sin B}{2}=\frac{4*4*\frac{\sqrt3}{2}}{2}=4\sqrt3$

Answer 2

aria = [ AB · BC ·sin60 ] : 2 = [ 4·4·√3/2  ] : 2 = 8√3 :2 = 4√3