Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 2 - Section 2.1 - Functions - Exercises - Page 157: 80


A) $S(2)=50.27$ (rounded), $S(3) = 113.1$ (rounded) B) Surface area of a sphere.

Work Step by Step

A) Plug in 2 and 3 for "r" and solve the problem, and rounding to two places will give you the surface area. $S(2)=4\pi(2)^2$ $S(2)=4\pi(4)$ $S(2)=50.27$ $S(3)=4\pi(3)^2$ $S(3)=4\pi(9)$ $S(3)=113.1$ B) The problem states that the surface area is represented by S. The formula given is used to solve for the surface area
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