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A horizontal trough is 40 cm long and its ends are in the form of an isosceles trapezoids with an altitude of 20 cm, a lower base of 20 cm and an upper base of 3 cm. Water is being poured into the trough at the rate of 5 cm/sec. How fast is the water level rising when the water is 10 cm deep?
9 years ago

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Steve
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9 years ago

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