triangular pyramid

• Surface area


  The total area of the outside or surface of a three-dimensional shape
• Triangular pyramid

  • Has a triangular base
  • Has three triangular lateral faces
• Finding surface area of a triangular pyramid

  1. Find area of base

  2. Find area of lateral faces

  3. Add all areas together
• Area of a triangle

  1/2 * base * height
• The lateral faces of a regular triangular pyramid all have the same area
• The formula for surface area of a regular triangular pyramid is: Surface area = Area of base + 1/2 * Perimeter of base * Slant height