A spherical iron ball 10 cm in radius is coated with a layer of ice of uniform thickness than melts at a rate of 50 cm 3 / min . When the thickness of ice is 5 cm , then the rate at which the thicknes

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A spherical iron ball 10 cm in radius is coated with a layer of ice of uniform thickness than melts at a rate of 50 cm 3 / min . When the thickness of ice is 5 cm , then the rate at which the thickness of ice decreases, is

TestHub · Accepted Answer

​ d t d v ​ = 50 4 π r 2 d t d r ​ = 50 ⇒ d t d r ​ = 4 π ( 15 ) 2 50 ​ where r = 15 = 16 π 1 ​ ​

Mathematics - Application of Derivative Question with Solution | TestHub

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