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Mathematics 11 Online
OpenStudy (anonymous):

The radius r and height h of a circular cone are increasing at a rate of 2 cm/min and 3 cm/min, respectively. How fast is the surface area of this cone changing when r = 4cm and h = 3cm?

OpenStudy (anonymous):

u know the formula for surface area of a cone?

OpenStudy (anonymous):

|dw:1350372111236:dw|

OpenStudy (anonymous):

area of cone= pi r l (excluding base area)

OpenStudy (anonymous):

fine?

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