maths

the cross section of a canal is a trapezium in shape .if the canal is 10m wide at top ,6m wide at bottom & the area of the cross section is 72 sq m ,determine its depth

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  1. The area of a trapezium is
    A = (Top+Bottom)*Height/2
    Solve for Height:
    H=2*Area/(Top+Bottom)
    =2*72/(10+6)
    =144/16
    =?

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  2. 144/16=

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