View Full Version : stuck on volume please help
Bouncing
06-05-2010, 07:26 PM
I cannot do this first question as you saw i got wrong, please help with both of them :)
http://j.imagehost.org/view/0613/Picture_54
cba with the formulae at this time but work out the volume of the cylinder and the cuboid. then take away a quarter away from the cylinder and add the new value (3/4 of the cylinder) to the cuboid. i think that's it anyway, my head is scrambled.
DieselShaq
07-05-2010, 11:13 AM
Hints:
1. Volume of cuboid = base * height * width
2. Volume of cylinder = pi * radius * radius * height
3. You need the volume of a quarter of the cylinder
AlexOC
07-05-2010, 02:53 PM
oh my god!
is that mymaths? we use that
ecstasy
07-05-2010, 04:41 PM
(pi*14*14) /4 *3 (thats the 3/4 of the circle)
+
28 * 28 (thats the square)
answer * 41
bingo
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