Please, i need help on how to solve problems like these. I dont understand and i wasnt in class when they taught it to us. PLz. Will make it the brainiest if its corrected and explaining how to solve problems like these.

x = 20

Step-by-step explanation:

You can use Pythagorean theorem which is

a = 12

b = 16

and c would be x.

12^2 + 16^2 = c^2

144 + 256 = c^2

400 = c^2

square root

c = 20 or x = 20

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.