Posted by **ankur** on Thursday, June 6, 2013 at 3:20am.

a spherical ballon is being inflated at the rate of 10 cu in/sec.find the rate of change of area when ballon has a radius of 6 inch.

(a)3.33 in2/sec

(b)3.67 in2/sec

(c)3.11 in2/sec

(d)none of these

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