Quandaries
and Queries 

Who is asking: Student Question: Well
that's it I really don't understand it so it would be a great help
if you could figure it out. 

Hi, As the snow melts and changes to water the mass remains constant but the density changes, so the volume changes. Use the expression for the volume of a sphere
to find the volume of the snowball in cubic centimeters. Every cubic centimeter weighs 0.75 grams and thus you can find the mass of the snowball. When the snowball melts its mass (now water) remains the same and since the density of water is 1.0g/cm^{3}you can find its volume. The water is in a cylinder of diameter 12 centimeters, and thus radius of 6 centimeters. The volume of a cylinder is
You know V and r and thus you can find h. Cheers, 

