1. 11.7 Volume of Pyramids and Cones
Mrs. vazquez
Geometry

2. g-gmd.1.1, 1.3 ; g-mg.1.3 Essential Question:
How do the volumes of cones and pyramids compare?
Objective:
Students will be able to calculate volume of pyramids and cones.

3. theorems Volume of a Pyramid: The volume of a pyramid is
V = ⅓Bh, where B is the area of a base & h is the height.
Volume of a Cone:
The volume of a cone is
V = ⅓Bh = ⅓(πr2)h, where B is the area of a base, h is the height, & r is the radius of the base.

4. Solve
A right cylinder with radius 3cm & height 10cm has a right cone on top of it with the same base & height 5cm. Find the volume of the solid rounded to the hundredth place value.

5. Find volume
h = 5.8in
∡formed by r & slant height = 40o

6. Find h
The volume of a right cone is 1350π m3 & the radius is 18m.