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Wednesday, 11 November 2015

surface area of pyramids

the (vertical) heights of the four sizes of pyramid are:
6cm , 9cm , 12cm and 15cm

the bases are all the same size square: 6cm by 6cm

what are the volumes of each of the four sizes of pyramid?

in surd form, what are the total (including the base)
surface areas of each of the four sizes of pyramid?

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