(ii) Find the coordinates 10 A pond is modelled as a cone with its radius and height in the ratio 2:3. Snow melt is filling the pond at a rate of 7.5 cm per second. (i) Determine the rate at which the...

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Extracted text: (ii) Find the coordinates 10 A pond is modelled as a cone with its radius and height in the ratio 2:3. Snow melt is filling the pond at a rate of 7.5 cm per second. (i) Determine the rate at which the depth of water is increasing at the point when the radius of the pond is 50 cm. (ii) Suggest a way in which the model may have to change as the pond gets deeper.