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errggh - Maths problem

30 replies

Piercy · 07/05/2018 09:34

Hi

I have a space of 60cm x 91cm x 10000cm how much of this space would 3 cubic meters take up?

On going problems with next door - long and boring and I'm hating that this matter is taking up a Bank Holiday Monday without trying to work maths out.

Is there a formula to this - help me please - thanks

OP posts:
Hilda40 · 07/05/2018 09:39

I think your space is 5.46 cubic metres, so 3 cubic metres would take up slightly over half. Subject to ratification.

BSJohnson · 07/05/2018 09:42

Turn it into the same units for both measurements.

So 3cubic m is 3,000,000 cm cubed, I think.

But your space is 60 x 91 x 10,000 = 54,600,000

Take the first away from the second and you have 51,600,000?

I think. Confused

BSJohnson · 07/05/2018 09:45

Hmmm. Maybe not, then! Grin

xsquared · 07/05/2018 09:45

Co vetting them in meters would give
0.6x0.91x100= 54.6 cubic meters. Is there an extra 0 in that last measurement? 100m seems like a lot for a house.

xsquared · 07/05/2018 09:46

Converting

BSJohnson · 07/05/2018 09:47

Mine would come out at 51.6 metres cubed!

DadDadDad · 07/05/2018 09:47

Might be easier to work in m:

0.60 x 0.91 x 100 = 54.6 cubic metres. (which agrees with BSJohnson).

Subtract 3, leaving 51.6 cubic metres.

BalloonFlowers · 07/05/2018 09:48

Your space is 0.6m x 0.91m × 100m (are you sure about this one???)
That makes 54.6m^3

3m^3 is a tiny amount of the total space.

BUT if the shapes aren't changeable, it won't fit in - if your 3m^3 is 1mx1mx3m its never goingbto fir in a space that is 0.6m x 0.9m

DadDadDad · 07/05/2018 09:50

Are the original dimensions correct? you are describing something like a long (100 metres) but fairly narrow and shallow trench.

DadDadDad · 07/05/2018 09:51

So, we're agreed on the maths, but all curious as to 3 m^3 of what going into what space?

pudcat · 07/05/2018 09:52

5.46 cubic metres - 3 cubic metres = 2.46 cubic metres. But it depends on the measurements of the 3 cubic metre shape as to whether it fits

CuriousaboutSamphire · 07/05/2018 09:53

60cm x 91cm x 10000cm

You can guesstimate it

You have a cube of just over half a metre x just under a metre times a 100 metres

Have you got that last number right or is there and extra 0?

So you have about 50 cubic metres

Try that in a calculator:www.ginifab.com/feeds/cbm/cubic_meter_calculator.html

DadDadDad · 07/05/2018 09:54

pudcat - you've answered the question for 60 x 91 x 1000 which is not what the OP asked, although it's possible OP typed an extra zero.

TooTrueToBeGood · 07/05/2018 09:54

You could be pedantic and answer "3 cubic metres". If the question is what percentage of space then:

30 ÷ 54.6 × 100 = 54.945%

pudcat · 07/05/2018 09:55

If it is 1m 1m 3m = 3 cubic metres it wont fit. You need to know exact dimensions of it

CuriousaboutSamphire · 07/05/2018 09:56

But that isn't right if the number of 0s in the OP is correct, it'd be about 5% Smile

CuriousaboutSamphire · 07/05/2018 09:57

Top marks to Pudcat! So bleeding obvious! And there we all were being clever about the 0s Grin Blush

DadDadDad · 07/05/2018 09:59

TooTrue - excellent point about reading the question, but you've made a slip, it's

3 / 54.6 x 100 = 5.49%

pudcat · 07/05/2018 09:59

pudcat - you've answered the question for 60 x 91 x 1000 which is not what the OP asked,
sorry was a typo - decimal point in wrong place

DadDadDad · 07/05/2018 10:12

If anyone wants a real maths problem, there's one in the Guardian today (Alex Bellos's fortnightly puzzle):

www.theguardian.com/science/2018/may/07/can-you-solve-it-im-a-mathematician-get-me-out-of-here

MadBadDaddy · 07/05/2018 10:14

My kids are taught to 'guesstimate' first, then tighten the answer up. I was dubious at first (I was schooled in the 70s) but now, I dunno...

So 60 x 91 x 10000 is roughly 50x100x10000 = 500,00,000 (90% correct).
Or even better if you convert to meters first: 0.5m x 1m x 100m = 50 cubic metres.
The next step is to do the sum properly, this time with "roughly 50" in mind.
I was only sniffy about it until I realised I do this myself all of the time.

TooTrueToBeGood · 07/05/2018 10:16

Fair point DadDadDad. I realised shortly after posting.

Piercy · 07/05/2018 10:19

wow - how are people able to do this and I've been left scratching my head!?!?!

To give you a bit of an overview it is a weird shape as DH and I have dispute with neighbour and an adjoining piece of land so it is 60 cm wide x 90 cm high x 10 m long

Its a log storage area - its a very long boring story - and the man needs to get a life but is retired and sees us as sport to make our lives a misery and fill in his time!!

My little boy has picked me flowers this morning as he knows I'm having to write a response to the neighbour and I would much rather be out playing with him - bless him xx

And thank you to guys n girls with great mathematical minds!!

OP posts:
DadDadDad · 07/05/2018 10:24

Aha! So, OP, your original information was incorrect, as some of us suspected. If you are saying 10m then the volume is 5.46 cu metres, so 3 cu metres will leave you 2.46 cu metres.

BalloonFlowers · 07/05/2018 10:25

Ok. If it's 10m long, the answer is about half the space.
The numbers you put in to start with make it 100m long.

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