Starting Out with C++ from Control Structures to Objects (8th Edition)

8th Edition

ISBN: 9780133769395

Author: Tony Gaddis

Publisher: PEARSON

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Textbook Question

Chapter 3, Problem 20PC

Pizza Pi

Joe’s Pizza Palace needs a program to calculate the number of slices a pizza of any size can be divided into. The program should perform the following steps:

A) Ask the user for the diameter of the pizza in inches.

B) Calculate the number of slices that may be taken from a pizza of that size.

A) Display a message telling the number of slices.

To calculate the number of slices that may be taken from the pizza, you must know the following facts:

• Each slice should have an area of 14.125 inches.

• To calculate the number of slices, simply divide the area of the pizza by 14.125.

• The area of the pizza is calculated with this formula:

Area = πr²

NOTE: π is the Greek letter pi. 3.14159 can be used as its value. The variable r is the radius of the pizza. Divide the diameter by 2 to get the radius.

Make sure the output of the program displays the number of slices in fixed-point notation, rounded to one decimal place of precision. Use a named constant for pi.

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Chapter 3, Problem 19PC

Chapter 3, Problem 22PC

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Chapter 3 Solutions

Starting Out with C++ from Control Structures to Objects (8th Edition)

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