triangular prism

• Surface area


  The area of the outside part or layer of a 3D figure
• Triangular prism

  • Has 5 faces
  • Need to find the area of each face
  • Add the areas together to get the total surface area
• Finding surface area of a triangular prism

  1. Find area of one base

  2. Multiply by 2 (since there are 2 congruent bases)

  3. Find area of 3 rectangular faces

  4. Add all the areas together
• Area of a triangle

  1/2 * base * height
• The left and right rectangles are the same size
• Finding area of a rectangle

  Length * width
• Surface area of the triangular prism = 2 * area of base + area of bottom rectangle + area of left rectangle + area of right rectangle