Surface Area of a Pyramid The lateral surface area of a regular pyramid is the sum of the areas of its lateral faces. The total surface area of a regular triangular pyramid of side a a is TSA 3a2 TSA 3 a 2 Substituting a 6 we get 3 62 3 66 6235 3 6 2 3 6 6 6235. If you look at the image of the historical Pyramid then its base is actually a square.
Triangular Prism Surface Area Top Surface Area of a Triangular Prism Formula A_top dfrac14 sqrtabcbc-aca-bab-c Bottom Surface Area of a Triangular Prism Formula A_bot dfrac14 sqrtabcbc-aca-bab-c.
001439 Find the lateral area and surface area of a square pyramid Example 4 001914 Find the lateral and surface area of a triangular pyramid Example 5. In the above pyramid the base is an equilateral triangle with side length 4 cm and each wall is a triangle with base 4 cm and height 6 cm. Since we know that a triangle has three sides then the triangular pyramid would have three triangular bases in that case. Surface Area SA ab 3bl 2 Where a Apothem Length b Length of Side l Slant Height.