1. Warm-up Find the surface area of a regular pentagonal pyramid

2. Volume of a Solid The number of cubic units contained in the interior of a solid.

3. Volume of prism, cylinder = area of base x height V = Bh or V = ∏r 2 h

4. Find the volume to the nearest tenth. V=Bh 3. V = 6(13)(3) V = 234 in 3

5. Volume Congruence Postulate The volume of a solid is the sum of the volumes of all its non-overlapping parts. Volume Addition Postulate If two polyhedra are congruent, then they have the same volume.

6. Cavalieri’s Principle If two solids have the same height and the same cross-sectional area at every level, then they have the same volume.

7. Use the Cavalieri’s Principle to find the volume of the oblique prism or cylinder.