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countrygirl1431

  • one year ago

A cylinder has a height of 5.3 cm and a diameter of 3.0 cm. What is its volume? (Hint: Volume of a cylinder = r2h ) 25.0 cm3 66.2 cm3 149.9 cm3 37.5 cm3

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  1. undeadknight26
    • one year ago
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    The formula for volume is actually pir^2h.

  2. countrygirl1431
    • one year ago
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    i know i just couldnt put pi

  3. countrygirl1431
    • one year ago
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    but r is the radius so couldnt i just do the diameter

  4. undeadknight26
    • one year ago
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    I see...Well the hardest/trickiest thing about this question is: V = pi * r^2 * h... Would it be: V = pi * 3^2 * 5.3 or: V = pi * 1.5^2 * 5.3? Diameter is from one side of the circle to the other while radius is from one side to the middle (Half the diameter).

  5. countrygirl1431
    • one year ago
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    right so the diameter =r^2

  6. undeadknight26
    • one year ago
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    Mhmm

  7. countrygirl1431
    • one year ago
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    so would have to square the diameter

  8. countrygirl1431
    • one year ago
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    so it would be 149.9 right?

  9. undeadknight26
    • one year ago
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    I don't think so...

  10. countrygirl1431
    • one year ago
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    thats what i got

  11. undeadknight26
    • one year ago
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    Did you do 1.5 x 2? or 1.5 x 1.5? 1.5 x 2 = 3 1.5 x 1.5 = 2.25

  12. countrygirl1431
    • one year ago
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    37.5

  13. undeadknight26
    • one year ago
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    :D I would believe that is your answer :D

  14. countrygirl1431
    • one year ago
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    ok thanks

  15. undeadknight26
    • one year ago
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    Any time m8

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