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Thread: Find Area of ABC Triangle

  1. #1
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    Find Area of ABC Triangle

    hi all....

    i need your help how to easy find area of triangle ABC below
    please, check this picture attachment..

    any help,much appreciated..

    m.susanto
    Attached Thumbnails Attached Thumbnails Find Area of ABC Triangle-shape_2016.png  
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  2. #2
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    Re: Find Area of ABC Triangle

    Quote Originally Posted by zidan3311 View Post
    find area of triangle ABC below : this picture attachment..
    Hint: $\Delta ABC$ has a base of $12c$ and height of $5c$.
    Thanks from zidan3311
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  3. #3
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    Re: Find Area of ABC Triangle

    Code:
    C
    
    
    
    
    
    B
    
    
    D        A
    Label your right angle vertex as D.

    I see nuttin' wrong with making ADC a right triangle,
    (thus B on CD); so area ABC = area ADC - area ADB.
    So real easy...

    What sayeth thou, Sir Plato?
    Should I go back to church?
    Thanks from zidan3311
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  4. #4
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    Re: Find Area of ABC Triangle

    Quote Originally Posted by Plato View Post
    Hint: $\Delta ABC$ has a base of $12c$ and height of $5c$.
    the final result is (12*5):2=30 cm2
    area of ABC = 30 cm2
    it's true, Plato?
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  5. #5
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    Re: Find Area of ABC Triangle

    Quote Originally Posted by zidan3311 View Post
    the final result is (12*5):2=30 cm2
    area of ABC = 30 cm2
    it's true, Plato?
    YES
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  6. #6
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    Re: Find Area of ABC Triangle

    Yes, it's true...but do you fully understand why?
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  7. #7
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    Re: Find Area of ABC Triangle

    thank so much guys, it helped, i learn step by step and keep focus...
    i love this forum...
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