Why is the formula for surface area of a sphere [math]4\pi r^2[/math], and why is volume [math]\frac{4}{3}\pi r^3[/math]? - Quora
![A continuous conveyor belt passes over two discs A and B of radii R and 4R respectively. They start from rest. A has angular acceleration of $\\dfrac{\\pi}{4}\\;rads^{-2}$. What is the angular velocity A continuous conveyor belt passes over two discs A and B of radii R and 4R respectively. They start from rest. A has angular acceleration of $\\dfrac{\\pi}{4}\\;rads^{-2}$. What is the angular velocity](https://www.vedantu.com/question-sets/9aa575dc-41cf-4ab6-a8de-e24720353337519192020023152372.png)
A continuous conveyor belt passes over two discs A and B of radii R and 4R respectively. They start from rest. A has angular acceleration of $\\dfrac{\\pi}{4}\\;rads^{-2}$. What is the angular velocity
![Fouilles de Delphes . > ÎBMsKi «^rif i*V . 4r« 2. Bloc de la fondation présentant un canal de bardage. F D. Région Nord. PI. 23 Stock Photo - Alamy Fouilles de Delphes . > ÎBMsKi «^rif i*V . 4r« 2. Bloc de la fondation présentant un canal de bardage. F D. Région Nord. PI. 23 Stock Photo - Alamy](https://c8.alamy.com/comp/2CDAE0P/fouilles-de-delphes-gt-bmski-rif-iv-4r-2-bloc-de-la-fondation-prsentant-un-canal-de-bardage-f-d-rgion-nord-pi-23-2CDAE0P.jpg)
Fouilles de Delphes . > ÎBMsKi «^rif i*V . 4r« 2. Bloc de la fondation présentant un canal de bardage. F D. Région Nord. PI. 23 Stock Photo - Alamy
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