A spherical birthday balloon with a radius of 9 cm is filled with helium, it has a density of .0147 kilograms per cubic centimeter. How many kilograms of helium does the balloon contain? a
44.9 kg
b
5 kg
c
3053 kg
d
.1323 kg

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.