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brittanyburton

  • 2 years ago

Find the volume of a cone with radius 30 in and slant height 50 in. A. 3769.91 in3 B. 3768 in3 C. 113040 in3 D. 37699.11 in3

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  1. tjones89
    • 2 years ago
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    |dw:1350415817536:dw|

  2. tjones89
    • 2 years ago
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    the volume of a cone is given by \[V = \frac{ 1 }{ 3 }\pi r^2h\]

  3. tjones89
    • 2 years ago
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    r = 30 is given to us but h will need to be calculated using the pythagorean theorem

  4. brittanyburton
    • 2 years ago
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    so...what's the answer? I tried it and it doesn't give me the correct answer.

  5. tjones89
    • 2 years ago
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    maybe you made a mistake in calculating h. using pythagorean theorem... \[50^2 = h^2 + 30^2\] h should then equal \[h = \sqrt{50^2 - 30^2}\]

  6. tjones89
    • 2 years ago
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    from here you just need to plug the numbers into a calculator

  7. brittanyburton
    • 2 years ago
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    I don't have a calculator -_-

  8. tjones89
    • 2 years ago
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    programs -> accessories -> calculator

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