00:01
Okay.
00:03
We are given a cup filled to the brim with water, and we are told that we are dropping a small ball into the cup, and water spills out, and we are asked to find the area of the spill.
00:20
Now, we have to ask ourselves, what information do we actually need to know? we are given the dimensions of the cup, but generally that is irrelevant.
00:32
We are, however, needing the dimensions of the ball, which that is provided to us as four centimeters worth of radius.
00:41
Now, when we drop this ball into this cup, the amount of water that leaves the cup is going to be equivalent to the amount of water that is, that is the volume of this ball.
01:01
So, we first will calculate the volume of the ball that's dropped in.
01:10
We're told it's a sphere, and the volume of the sphere is four -thirds pi r -qued.
01:20
When you plug in four for r, you get a value of 268 cubic centimeters.
01:32
Make sure that you put your units on this because this becomes relevant very, very quickly.
01:38
Now, we are told that the area of the wet spot that the water creates, we are told that the height of that is one millimeter.
01:56
Now, we have a couple of different ways that we can go about this...