Cross-Sectional Area Calculator ToolBy / Cross-Sectional Area Calculator Cross-Sectional Area Calculator Select Shape: Circle Rectangle Triangle Hollow Circle Enter Radius (r) in mm: Enter Length (l) in mm: Enter Width (w) in mm: Enter Base (b) in mm: Enter Height (h) in mm: Enter Outer Radius (R) in mm: Enter Inner Radius (r) in mm: Calculate Area Note: Choose the shape and enter the necessary dimensions. The result will be displayed in mm².
