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# >>A cylindrical package sent by the post office can have a maximum combined length and girth(the perimeter of a cross section) of 108 inches.

>>A cylindrical package sent by the post office can have a maximum combined length and girth(the perimeter of a cross section) of 108 inches. Find the dimensions of the package of maximum volume that can be sent(i.e. find the length and radius that gives the maximum volume)

>>Suppose that water is being emptied form a spherical tank of radius 10. If the depth of the water is 5ft and decreasing at a rate o 3ft/sec, at what rate is the radius, r, of the top of the ...water decreasing?

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