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Math Help - Volume & Ext Surface of Prism

  1. #1
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    Volume & Ext Surface of Prism

    Need some assistance with the following. Pls see attachment for prism diagram. Thanks for your help.

    1. calculate the volume of the prism
    2. calculate the exterior surface area of the prism.
    Attached Thumbnails Attached Thumbnails Volume & Ext Surface of Prism-figure.jpg  
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  2. #2
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    Why are you struggling with this. Show your work.

    What's the area of a circle? You've half of that.

    What's the relationship between the hypotenuse and the legs of an isosceles right triangle? You'll need that.

    What's the area of a triangle? You'll need that.

    Once the area of the cross section is known, multiply by the length and be done.

    One more thing, you may wish to get your units a little more consistent. m and mm mix pretty well, but a little work is required.
    Last edited by TKHunny; June 7th 2008 at 06:03 AM.
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  3. #3
    Lord of certain Rings
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    Or cant we look at it this way:

    The given piece is a quarter of a circular prism with height = 8.6m and radius 100mm. Thus the volume of the given piece is \frac{\pi r^2 h}{4}?
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