Plug in the volume and radius into the formula, then multiply.
I don't know the first one but the second one is The second national bank was chartered in 1816.
It is my opinion that it is C) but i am not sure, you might be correct though...
((x+2)(x+2))-((x-5)(1))=A
x^2+4x+4-x+5=A
x^2+3x+9=A