Answer:
V = 2143.57
Step-by-step explanation:
To find the volume of a sphere you need to use this formula:

r = radius
Solve:
You need the radius from the diameter. Divide 16/2 which is
8.

V = 2143.57
Y=2
If you subtract 9-7 you get the answer 2 which makes y=2.
Answer:
73>78
Step-by-step explanation: 20 +50 + 9= 79 -6 = 73