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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?

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A1V=A2V2
A1 = π(2.6cm)2
A2 =(0.65cm)2
π(2.62)cm3 × V1ms−1
    =π(0.625)cm× 3ms−1 
V=0.19ms−1

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