Application of Calculus Q. - Derivative (1 Viewer)

[Utility]

A conical fuel tank is 2.5m deep and has a top diameter of 2m. Fuel is withdrawn from the tank at a rate of 0.25 m³ /min. At what rate is the level of fuel falling at the instant when the depth of fuel is 1.5m?

 

[cineti970128]

Really? It's 3 unit question

Find dv/dh × dr/dv and substitute