[it's a cone with a smaller cone chopped off]
[it's a part of an annulus]
work out the dimensions of the portion of the annulus (washer shape) needed to make the fabric of this lampshade
(ignoring any overlap of material)
Wednesday 27 February 2013
cone frustum
[it's a cone with a smaller cone chopped off]
[it's a part of an annulus]
work out the dimensions of the portion of the annulus (washer shape) needed to make the fabric of this lampshade
(ignoring any overlap of material)
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