What is the similarity ratio of the smaller to larger similar cylinders? smaller cylinder d=12 height=20 larger cylinder d=18 height=30

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

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.

jwjeh; hw; kjhekjhkjhwkejhkw

step-by-step explanation:

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