   Chapter 9.CR, Problem 17CR ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
1 views

# Find the surface area of a sphere if the radius has the length 7 in. Use π ≈ 22 7 .

To determine

To find:

The surface area of a sphere.

Explanation

Formula used:

Surface area of sphere:

S=4πr2

Given:

The radius of a sphere has the length 7 in. Use π=227.

Calculation:

The radius of a sphere as shown in the above figure.

The radius of the sphere is r=7 in.

We substitute the values r=7,π=227 in above formula,

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