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A canal has rectangular cross section of width10cm and breadth 1m. If water of uniform...

Mathematics
JAMB 1978

A canal has rectangular cross section of width10cm and breadth 1m. If water of uniform density 1 gm cm-3 flows through it at a constant speed of1000mm per minute, the adjacent sea is

  • A. 100000
  • B. 1000000
  • C. 120000
  • D. 30000
  • E. 350000
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Correct Answer: Option A
Explanation

The canal's width = 10cm = 100mm (given)

The speed of water = 1000mm

10mm = 1cm

1000mm = 100cm

The adjacent sea must give speed x width

= 1000 x 100 = 100,000

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