A reservoir is 80m long and its cross section is an isosceles trapezoid having equal sides of 10m, an upper base of 17m, and a lower base of 5m. At the instant when the water is 5m deep, find the rate at which the water is leaking out if the water a+b level is falling at 0.1m/hr. (Volume of a trapezoidal prism is -hl, where a and b 2 are bases of the trapezoid, h is the height of the trapezoid, and l is the length of the

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