Round 0.63 to the nearest tenth, hundredth and thousandth

0.63

rounded to nearest tenths = 0.6
rounded to nearest hundredth = 0.63
rounded to nearest thousandth = 0.630

The formula for cylinder of pi is v = π r ^ 2 h.

So you are going to do pi x 6^2 x 12 = 1357.168026350791 then divide 1357.168026350791 by pi and you get C. 432 pi in.^2

Also here is a link to a calculator that can really help with problems like this.
https://www.eeweb.com/tools/calculator

Hope this Helps!!