A sphere of radius r has surface area A = 4πr2 and volume V = 4/3πr3. The radius of sphere 2 is triple the radius of sphere 1.What is the ratio of the areas, A2/A1?

Let us use subscript 1 for smaller sphere and subscript 2 for largersphere .Then , according to…

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The radius of sphere 2 is triple the radius of sphere 1. What is the ratio of the areas, A2/A1?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter1: Introduction And Vectors

Section: Chapter Questions

Problem 8P

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Question

A sphere of radius r has surface area

A = 4πr²

and volume

V = 4/3πr³.

The radius of sphere 2 is triple the radius of sphere 1.

What is the ratio of the areas, A₂/A₁?

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