In a robotic subsea exploration probe, a hydraulic actuator is used to operate a sample-collection gripper. The actuator applies a force of 315 N315\text{ N}315 N normal to the circular face of a small piston. The pressure transmitted through the hydraulic fluid is 7.5×105 Pa7.5 \times 10^5\text{ Pa}7.5×105 Pa.
Calculate the cross-sectional area of the piston face. Give your answer in standard form and include the correct SI unit.
Practise AQA GCSE Physics Pressure and pressure differences in fluids (physics only) with exam-style questions for Foundation and Higher tier. 27 questions covering Pressure in a fluid and Atmospheric pressure, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.