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JEE Main Math Class 12 Application of Derivatives Part 1 Questions

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Question : 1

Total: 100

A spherical iron ball of radius 10 cm is coated with a layer of ice of uniform thickness that melts at a rate of 50 cm‌3/min. When the thickness of the ice is 5 cm, then the rate at which the thickness (in cm/min) of the ice decreases, is :

[April 10, 2019 (II)]

1
18π
1
36π
5
6π
1
9π

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