Find value of
13)
14
10
56
40
14
3
56
22
3
12

12

Step-by-step explanation:

The two shapes are similar and in a ratio of 4/1.

This is because, for matching sides of the quadrilaterals:

56 / 14 = 4

40 / 10 = 4

56 / 14 = 4

Therefore, 3  * 4 = 12 (The matching side in the larger shape)

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.

the answer is 21%.