A water pipe of diameter 5.2cm is connected to another pipe of diameter 1.3cm. The speed of the water in the smaller pipe is 3ms^{-1}. What is the speed of the water in the larger pipe?

A_{1}V_{1 }=A_{2}V_{2}A_{1} = π(2.6cm)^{2}A_{2} =(0.65cm)^{2}π(2.62)cm^{3} × V1ms^{−1} =π(0.625)cm^{2 }× 3ms^{−1 }V_{2 }=0.19ms^{−1}

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