Conjider a snun ball meting ina narm roum. Juppo that the SNUN hail maintaini the shape uf a ball wnen it melts the Vulume V Imeasured in (uhic incn) (ind urfale area sCmeasured in square Inch ) uf the snun hall cind time t(measurec in hour) satisfy dV dt -나s err be the radius (measured in incn) of the snuw ball. Then andl S be conmpted by the foluing formulas S= 니Tr2 (a) Find drldt tTr2 dr dt it ( 3r 2) dr-Tr3 cr T dira clt 31r3) dt dt at --4S Clt 나ㅠ 4141r2) TTr2 dr dc -1OTTr 2 4Tr2 dr at -4 tt (b) When uIT square inches, find dsldt -M पुड

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