Saturday 3 December 2011

Pyramid


pyramid




Square Pyramid Fact
When we think of pyramids we think of the Great Pyramids of Egypt. They are actually Square Pyramids, because their base is a Square. It has 5 faces. The 4 side faces are triangles. The base is square. It has 5 vertices (corner points). It has 8 edges.

When all side faces are the same:

Surface area = Base area + 1/2 x perimeter x (slant length)

When side faces are different: 

[Base Area] + [Lateral Area]


Volume = 1/3 x (base area) x height



















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