This week I learned that a cone is 1/3 of a cylinder or how a pyramid is 1/3 a cube, I also learned about slant height and how it is involved with pyramids and cones. To find the slant height of a pyramid or cone you use the height and the radius to form a right triangle and use Pythagorean theory to find the missing side length, that length then becomes your slant height.

The slant height is then used to find a cone/pyramid’s surface area

Cone SA = πr^2 + πrs

Pyramid SA = 2bs + r^2