Cubic volume question - builder stuff?

Factual Questions
1

I found a rather crytic note waiting for me this morning. It reads:

Ok, I guess he means volume. But I don’t get it. This can’t be a cuboid since two of the area numbers should be the same, yes?

I’m too hungover to decipher this properly. Any ideas? The guy is a painter/plasterer/builder type, if that gives a clue what he’s on about…

2

sound like some sizes taken for a 200 slab and he wants cubes of concrete to pour
a bit irregular in shape though
about 20 cu.m

3

Umm…Ok. What are those areas sizes then? Not sure how you arrived at 20m[sup]3[/sup] either. As I said before, I’m a bit hungover after Christmas party, so you have to explain with small words :wink:

4

Maybe it’s meant to say:

11.8m x 12.2m + 14.1m x 4.6m

(maybe the slab is to be L shaped)

??

5

It’s just a typo. 11.8 x 12.2 plus 14.1 x 4.6, depth 0.2.

Equals 41.8 cubic metres.

6

Note to self. Always preview.

7

i thought it might have been a garage hardstanding rregular shape
i thought the 4.6 and 11.8 might be at right angles and the other two sort of bisecting each other somewhere
4.6 x 11.8 = 55
and if the other are roughly taken as the sides of a triangle
(14.1 - 4.6) x 11.8 roughly /2 = 58
55 + 58 = 113 x 0.2 = 22.6 and add 10% =25

like is said 20
:smack:

8

i think i would go with this. it seems a bit more sensible.
was typo-ing my reply as this appeared.
:slight_smile:

9

I’ll go with this then. Seems I need to know the shape otherwise. Thanks folks.

10

For the sake of completeness, I’ve since discovered that it was actually this shape:



	|\
	|  \
	|    \
	|      \ 14.1m
	|        \
 11.8m  |          \
	|            \
	|	       \
	|		|
	|		|4.6m
	|		|
	|_______________|
             12.2m

…so mrcrow was right with the 20m[sup]3[/sup]

11

Thanks, dylan_73. I wondered how that turned out.

mrcrow’s guess at the shape was right.

Hope you’ve explained to John about the guessing, and how to avoid it in future. :slight_smile: