Ball Volume and surface Area

Ball have surface area and volume formula that can define by the ball diameter or by ball radius, but to calculate the volume if the ball is not full calculate by other formula.
If R = ball radius
Then the surface area of ball can be calculated using the formula: 4 x π x R2
Then the ball volume can be calculated by this formula: 4/3 x π x R3

For example calculate this exercise:
Count the volume of ball with radius of 3 cm.
V = 4/3 x π x R3 = 4/3 x 3.14 x 33 = 37.68 cm3

How about if the ball contain of water but not full, say 1/3 of the ball height, count how much the ball volume?
Can you count this? if you don't know yet, wait for my next blog.

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