Math question.

[espio100]

You have a marble but you want to know volume of the marble without measuring its diameter for some odd reason.
So you take a cilinder with a diameter of 10 centimeters and fill it with 10 centimeters of water
You add 10 marbles and the water raised 2 centimers
1) Whats the volume of 10 marbles
2) Whats the volume of 1 marble
3) Whats the diameter of 1 marble
4) Why did you add 10 marbles instead of lets say... 7?
Had this stuff on my exam and im not sure of my answer.

Info for special snowflake imperial systems: 10 centimers = 3,93inches

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[Ducky duck]

i cant do math

[TableSalt]

why not i dunno just add 1 marble or meASUER THE DiAMATER

[espio100]

why not i dunno just add 1 marble or meASUER THE DiAMATER

You can measure the diameter because rulers are banned from this point on.

[TableSalt]

You can measure the diameter because rulers are banned from this point on.

what about protractors, yard sticks, and tape measures?

[gr8dayseth]

i cant do math

sorry espio this was your last lifeline you must answer the question now

[espio100]

what about protractors, yard sticks, and tape measures?

But you cant

[Dannu]

This assumes that all marbles fit into the cylinder which should have been specified.

[Maxwell.]

work out the volume of the cylinder/depth of water without marbles, then with marbles

v = pi * r^2 * h
v = pi * 25 * 10
v = 785.398163

v = pi * r^2 * h
v = pi * 25 * 12
v = 942.477796

volume of 10 marbles = 942.477796 - 785.398163 = 157.079633
1 marble = 157.079633 / 10 = 15.71cm^3

diameter of 1 marble is given by rearranging so v = 4/3 * pi * r^2
divide both sides by pi, not gonna go through rearranging this but it gets r^3 = (5 * 3) / 4
r^3 = 15/4
r = cubedroot(15/4)
r = 1.55361625 * 2

hey dannu answered this while I was typing forget

[Pastrey Crust]

You have a marble but you want to know volume of the marble without measuring its diameter for some odd reason.
So you take a cilinder with a diameter of 10 centimeters and fill it with 10 centimeters of water
You add 10 marbles and the water raised 2 centimers
1) Whats the volume of 10 marbles 2cm^3
2) Whats the volume of 1 marble  0.2cm^3
3) Whats the diameter of 1 marble (cubic root(12*pi^2))/pi
4) Why did you add 10 marbles instead of lets say... 7? Because forget you that's why
Had this stuff on my exam and im not sure of my answer.

Info for special snowflake imperial systems: 10 centimers = 3,93inches

[espio100]

This assumes that all marbles fit into the cylinder which should have been specified.

I have 2.51cm^3 for a single marble
Ehm

Or I didnt get the question right because im a twat. But as far as I know the diameter was the same as the height
Or I cant remember my asnwer because im a twat

wel rip, thanks guys