Discussion
I have a sphere with a diameter of one metre. The sphere is filled with glue. I want to know how much paper I can stick other paper using the glue (extra marks for expressing in numbers of A4 sheets rather than m^2). The glue needs to be 0.5 mm thick to stick effectively. Please let me know the answer (5 marks).
DangerousMike said:
I have a sphere with a diameter of one metre. The sphere is filled with glue. I want to know how much paper I can stick other paper using the glue (extra marks for expressing in numbers of A4 sheets rather than m^2). The glue needs to be 0.5 mm thick to stick effectively. Please let me know the answer (5 marks).
Do your own bloody homework!! 
k?Simpo Two said:
Volume of a sphere is 4/3 pi x r3
My faith in PH is restored, if you confirm that you knew/remembered this. (no doubt you will know what 1/3 pi r2 times h, will relate to. 
)Have not worked it out - but your methodology is correct.
I almost lost the will to live with the 10m3 thread!
you really are dangerous Mike..
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
you really are dangerous Mike..
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
you really are dangerous Mike..
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
please put aside 0.0003118 m3 of glue, sniff the rest of it, use the saved glue to stick a single sheet of A4 to your noggin with "I need to get out more" written on it in large red crayon.
Now I remember why I hated living in the UK in the dark months... it causes you to come up with this kinda stuff! (PS... loved living there the rest of the year btw)
merry christmas btw
Simpo Two said:
Volume of a sphere is 4/3 pi x r3
In cubic metres:
= 4/3 x 3.142 x 0.5 cubed
= 0.523 m3
Glue needed to stick one sheet of A4 = 0.297 x 0.210 x 0.005 = 0.0003118 m3
Therefore you can stick 3,207 sheets of A4.
Good work out, thanks
0.523/0.0003118 does not equal 3,207. Your maths went a bit awry at the last stage.
In cubic metres:
= 4/3 x 3.142 x 0.5 cubed
= 0.523 m3
Glue needed to stick one sheet of A4 = 0.297 x 0.210 x 0.005 = 0.0003118 m3
Therefore you can stick 3,207 sheets of A4.
Good work out, thanks
0.523/0.0003118 does not equal 3,207. Your maths went a bit awry at the last stage.
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