Question

are these right?

Answer 1

i got SA=402.12cm^2
and V=603.19cm^3

Answer 2

This is a cylinder. So the V = pi * r^2 * h and the SA = 2 * pi * r^2 + 2 * pi * r * h

Answer 3

and thats what i did

Answer 4

then unless you've made a mistake in calculating, you're correct. Use Microsoft Excel to check your answers.