12-2: Pyramids
A
is a polyhedron formed by connecting
a polygonal base to a point (the vertex) with
triangular lateral faces.
Pyramid Formulas
Surface Area:
Volume:
A regular square pyramid has base length 6 𝑚
and lateral edge 5 𝑚. Complete the table.
Slant height
Lateral area
Base area
Total area
Length of altitude
Volume
Find the volume and total surface area.
Find volume of a regular hexagonal pyramid
with lateral edges 10 𝑓𝑡 and base edge 6 𝑓𝑡.
p. 485: #1-19 odd, 16, 18, 26