[填空题]
The small piston of a hydraulic lift has a diameter of 8.0 cm, and wa gza/ 5zw48rihl6uhj 1v66ob) 69m ib0r-ag kcr/rogts large piston has a diameter -v6/khroj0gar6 b b6r igclmuo96)1hof 40 cm. The lift raises a load of 15,000 N. (a) Determine the force that must be applied to the small piston $N$ (fill in numerical value only) (b) Determine the pressure applied to the fluid in the lift $\times 10^5 \; Pa$ (fill in numerical value only)
