math

steel is $50 per cubic foot. What is cost of cone with radius 7.5 inches and 25 inches height?

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  1. Work out all dimensions in feet.

    r=7.5 inches = 7.5/12=0.625'
    h=25 inches = (25/12)'

    Volume = (1/3) π r² h
    and
    from the price of $50/ft², we get

    Cost=volume*price
    =(1/3) π r² h * 50

    Round the answer to two decimal places (to the cent).

    I'll leave it to you to work with the buttons of your calculator.

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  2. Thank you, it works.

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  3. You're welcome!

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