Pi=3.14 m=6 g=0.006 kg r=5 cm =0.05 m h=2 cm=0.02 m volume_of_cone=pi*r^2*h/3 = 5.23599*10^-5=5.24E-5 p=m/v p=(0.006/(5.24E-5))=1.14503817*10^-8=1.14503817e-8
A. because the total distance of every triangle 180. Add the two other angles so 42+ 57 =99. Then you have to subtract those two combined angles to find the missing one from the total distance, which is 180. 180-99=81. the answer is A. 81