In an industrial hydraulic metal-shearing machine, a normal force of 72 kN72\text{ kN}72 kN is applied to a piston. The pressure in the hydraulic fluid is 3.2×107 Pa3.2 \times 10^7\text{ Pa}3.2×107 Pa.
Calculate the cross-sectional surface area of the piston. Give your answer in standard form and include the appropriate unit.
18 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.