Mathematics · 2013
JEE Main · 25 April 2013, Shift 1 · Q81
A spherical balloon is being inflated at the rate of 35cc/min. The rate of increase in the surface area (in cm^2 / min.) of the balloon when its…
A spherical balloon is being inflated at the rate of 35cc/min. The rate of increase in the surface area (in $\displaystyle \mathrm{cm}^2 / \mathrm{min}$.) of the balloon when its diameter is $\displaystyle 14$ cm, is :
Official answer
(1)
$\displaystyle 10$
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