Measuring Spheres: How to Use the Formula (4/3 π r3)

AI Thread Summary
The discussion centers on understanding the formula for the volume of a sphere, (4/3 π r3), where "r" is the radius. Participants clarify that the formula calculates the volume and suggest that the original poster should be able to derive the problem from this equation. There is some debate about whether the poster needs a derivation or proof of the formula. The conversation also touches on the relevance of referencing older threads. Overall, the focus remains on how to apply the formula for homework related to measuring spheres.
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I have homework, the teacher gave us measuring spheres. He gave us the formula (4/3 π r3) But he didn't show us how to figure out the problem.
I don't know how your suppose to figure it out.
 
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What's the problem? Do you want to know the derivation of the formula or a proof?
 
The equation you stated it the equation for the volume of a sphere where "r" represents the radius of the sphere (the distance from the centre of the sphere to edge) and Pi is the constant 3.14...

You should be able to work things from there.

Leila
 
I would really doubt if the OP thought the same way as you are explaining :confused: :cool:
 
Don't get dexter started on spheres..

Edit: was there any need to bring up threads that are nearly a month old?
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
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Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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