median
don steward
mathematics teaching 10 ~ 16

Wednesday, 27 February 2013

cone frustum




how do you work out the volume (in general)?

the curved surface area?












work out the volume of the cup



















work out the volume of the bowl




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)



show that the angle required is 207.57 (2dp) degrees

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