Sam uses a rectangular zinc with the perimeter of 30cm to build an open cylinder at both ends. Find the height and width, in cm, of the zinc so that the volume of the cylinder is maximum. this is actually an Integration question.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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