You have a cylinder. You don't know what its internal structure looks like, but you plan to roll it down a ramp, as in this week's procedure. The ramp is $1\mathrm{????}$ long, and is elevated at an angle of $15.$ The mass of the cylinder is $450\mathrm{????}$ and its diameter is $2\mathrm{.}1\mathrm{????}\mathrm{????}.$ Answer the following questions regarding this situation.

You set the cylinder and hold it at rest at the top of the ramp. How much total energy $($in J$)$ does the block have at the top of the ramp?

After you release the cylinder, it rolls down the ramp without slipping, gaining speed. How much total energy $($in J$)$ does the block have at the bottom of the ramp?

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$[$Caution Tricky$]$ If the velocity of the cylinder is $1\mathrm{.}75\frac{\mathrm{????}}{\mathrm{????}}$ at the bottom of the ramp, what is the value of $\mathrm{????}($see equation $3)$ for this unusual cylinder $($in SI units$)?$ Express your answer as a decimal $($i$.$e$.\frac{1}{4}=0\mathrm{.}25).$