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mathematics

Hey did i get this right?

Find the volume of this perfume bottle.
h= 12.4 cm
r^2=6.2 cm
MY ANSWER:
V=1/3 x pi r^2 x h
V= 1/3 x pi3.1^2 x 12.4
V= 1/3 x 9.61 pi x 12.4
V= 1/3 x 119.164 pi
V= 39.72/3 pi
V= 41.5736cm3

please help!

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  1. if r^2 = 6.2, why did you say in line 2 that r^2 = 3.1^2 ?
    Do you mean that the diameter was 6.2?
    If the bottle is shaped like a cone, then your calculations look good until the next-to-last line, when you divided by 3 an extra time.
    It should have been just 39.72 pi = 124.788

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  2. I watched a video about it, I guess I just gotten confused a bit. But thank you! :)

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