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Math Help - Need help finding surface area

  1. #1
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    Need help finding surface area

    I'm reviewing in preparation of the last test. I guess I'm having some problems with this geometry question. I know the formulas for both objects I'm just not sure how to put them together since the triangle will have the base of the rectangle. So, I'm uncertain with what adjustments need to be made with the traditional math formula

    Any help is appreciated
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  2. #2
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    Re: Need help finding surface area

    There are 8 surfaces in the house subject to outside weather.Area of rectangle = L*W. Area of triangle =1/2 * base *height. Four of them have congruent mates.Take 2 of A,2ofB,2of C and 2 of D.Calculate the slant height of roof using Pythagoran T
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  3. #3
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    Re: Need help finding surface area

    Thanks for the reply bjhopper

    Should i not cover the entire area of the rectangle with 2(wh+1w+lh)
    2(19)(18)+(19)(22)+(18)
    I included the Pythagoran part
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  4. #4
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    Re: Need help finding surface area

    A 2*18*22
    B 2*19*18
    C 2*1/2*14*19
    D 2*22* slant h of roof
    Sum of above
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  5. #5
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    Re: Need help finding surface area

    thanks for the help Bjhopper it's greatly appreciated
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