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
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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.
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
oh my god!
is that mymaths? we use that
(pi*14*14) /4 *3 (thats the 3/4 of the circle)
+
28 * 28 (thats the square)
answer * 41
bingo