17) An ice cube is melting at a Rate of 12 cubic inc. per minute. How...

 

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17) An ice cube is melting at a Rate of 12 cubic inc. per minute. How fast is the edge x of the cube is decreasing, when x = 4 inc. ? (hint: Use Vx) 18) A spherical balloon is inflated at a Rate of 4 cubic ft / minute. Then find how fast a) the Radius R is changing when Radius was 2 ft? b) The Surface Area S is changing when Radius was 2 ft? 17) An ice cube is melting at a Rate of 12 cubic inc. per minute. How fast is the edge x of the cube is decreasing, when x = 4 inc. ? (hint: Use Vx) 18) A spherical balloon is inflated at a Rate of 4 cubic ft / minute. Then find how fast a) the Radius R is changing when Radius was 2 ft? b) The Surface Area S is changing when Radius was 2 ft?