Could you check/help with my work

Cone with a radius of 9 in. and a height of 11 in.

Volume: 933.05 cubic inches

Total Surface Area: 656.32 or 565.48 I’m not sure

Total packaging cost if it costs $0.03 per square inch
Material Cost:$19.69 or $16.96 again dependent on the Total surface area

Question

Could you check/help with my work

Cone with a radius of 9 in. and a height of 11 in.

Volume: 933.05 cubic inches

Total Surface Area: 656.32 or 565.48 I’m not sure

Total packaging cost if it costs $0.03 per square inch
Material Cost:$19.69 or $16.96 again dependent on the Total surface area

anonymous · Answer

That looks right

anonymous · Answer

wait what did you times to get the volume?
because all that i see that you could have timed is $$9\times11$$ where is your other number?

anonymous · Answer

π·9^2·11/3

anonymous · Answer

ok so why did you do your 9 times 9? you would do L*H*W and get your volume,

anonymous · Answer

so by what you just put it would be$$9\times11\times3$$

anonymous · Answer

or what ever the length height and width is

anonymous · Answer

This is for a cone.

anonymous · Answer

ok then you would be right. you should always put for what in your work. you did it all right. very good