Maths Question

[secsee1]

Could somebody please advise me on a question that came up in a quiz last night it said "if you had an area of 5 metres long X 5 metres wide X 50mm deep what volume of ready mix concrete would you need to cover it" can anyone work this out & what is the formula for doing it?

[emeritus]

5 x 5 x 0.05 = 1.25 Cubic Metres

Length x Width x Depth

I think

[tenrec]

Agree with Em

[secsee1]

Thank you lovely AB people I know I can always count on you for an answer.

[sandyRoe]

12.5 cubic metres

[sandyRoe]

if it was 5 x 5 x 1 it would require 25 cubic metres. But the depth is half a meter, so half 25=12.5

[emeritus]

Its not half a metre Sandy its 50 mm

[nescio]

Sandy,
50mm is 0.05m
It has already been answered correctly.

[New Judge]

It's 50 MILLIMETERES deep, Sandy, not 50 centimeters. So emeritus is correct.

[sandyRoe]

Then I'm wrong. Maybe time for new glasses.

[New Judge]

And I was not quick enough !!!

[mccfluff]

sandy its 50 ml
doh..... :-)

[sandyRoe]

But if you were going to inter a body under such a large patio wouldn't you need a bit more than a mere 50mm?