Answer:
the answer is 8200
Step-by-step explanation:
8200+8200=16400
Surface area = 4 pi r^2
where
pi : 3.14 a constant
r : raduis
surface area is the change of volume with respect to raduis
volume = 4/3 pi r^3
dvolume/dr = 4 pi r^2
you can prove the identity with double integration in spherical coordinates or volumes of revolutions and polar coordinates
The answer you’re looking for is B
Answer:
30 for the first one
Step-by-step explanation:
