Aim: How do we find the surface area and lateral area of pyramids & cones?

• The surface area is the outside of a solid. So here we'll be working with solids like pyramids & cones. They both have triangles. 

• Pyramids have triangles as the lateral area and only one face

To find the surface area of a pyramid you must fist find the Lateral area.

L.A=1/2Pl

 to find the sureface area you have to add the lateral area to the size of the base 

S.A= L.A+B


To calculate the surface area of a cone

1/2Circumfrence times H plus Pi R squared