跳转至

4.5 Area and Perimeter Calculations

Computing areas and perimeters of polygons, circles, and composite figures using appropriate formulas.

本节包含的知识点

  • 4.5.1 Perimeter of Polygons — Calculate the perimeter of various polygons by summing the lengths of all sides.
  • 4.5.2 Area of Polygons — Compute areas of polygons (rectangles, parallelograms, trapezoids, regular polygons) using appropriate formulas.
  • 4.5.3 Circumference and Area of Circles — Calculate circumference and area of circles using formulas C = 2πr and A = πr².
  • 4.5.4 Area of Composite Figures — Find areas of composite shapes by decomposing them into simpler geometric figures and summing their areas.
  • 4.5.5 Applications and Problem Solving — Apply area and perimeter formulas to solve real-world problems involving land, construction, and design contexts.