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    A river is 30 metres wide in a certain region and its depth,d metres, at a point x metres from one side is given by the formula d=1/60[(x(30-x)(30+x) to the power of 1/2].
    (a) use simpsons rule with 6 intervals to estimate the cross-sectional area of the river in this region,giving your answers to 3 significant figures.
    (b) given that in this region, the river is flowing at a uniform speed of 50 metres per minute, estimate the number of cubic metres of water passing per minute.
    i dont know where i keep going wrong.
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    (Original post by faisa12345)
    A river is 30 metres wide in a certain region and its depth,d metres, at a point x metres from one side is given by the formula d=1/60[(x(30-x)(30+x) to the power of 1/2].
    (a) use simpsons rule with 6 intervals to estimate the cross-sectional area of the river in this region,giving your answers to 3 significant figures.
    (b) given that in this region, the river is flowing at a uniform speed of 50 metres per minute, estimate the number of cubic metres of water passing per minute.
    i dont know where i keep going wrong.
    Could you post your working?
 
 
 
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Updated: January 7, 2017
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