2018 NJC Promo Q12
2018 NJC Promo Q12
4 marks
Promo
- The diagram below (not drawn to scale) shows a cross-section of an empty swimming pool measuring \(50\)m long, \(20\)m wide and \(2\) m deep.
Suppose water is being pumped into the pool at a rate of \(100\) m\(^{3}\) per min. How fast is the water level in the pool rising when the depth of water is \(1.6\) m?[4]
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Answer:\(\frac{5}{49}\) m/min
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