Lesson Plan: Surface Areas of Composite Solids Mathematics • 7th Grade

This lesson plan includes the objectives and prerequisites of the lesson teaching students how to find the surface area of a composite solid using the formulas for lateral and total surface areas of a single solid.


Students will be able to

  • find the surface areas of composite solids where two solids have been joined together,
  • find the surface areas of composite solids where one solid has been removed from another,
  • solve real-world problems by finding the surface areas of composite solids.


Students should already be familiar with

  • finding areas of 2D shapes:
    • squares,
    • rectangles,
    • parallelograms,
    • triangles,
    • trapezoids,
    • kites,
    • circles,
  • finding the areas of composite 2D shapes.

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