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Math Help - Calculate the area of the triangle using vectors

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    Calculate the area of the triangle using vectors

    Calculate the area of the triangle using vectors-triangle.jpg A triangular shade cloth is to be suspended by three poles of different heights as shown. The feet of the poles are 10 m from each other. The heights of the poles are in the diagram. Calculate the area of cloth needed.

    The answer is supposed to be 43.5 m^2. Please help!!!
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  2. #2
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    Re: Calculate the area of the triangle using vectors

    Use Pythagoras to evaluate the length of each side of the triangle, then apply Heron's Formula.
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