Question

Write a C program named assignment04.cpp that will

1. ask for and read in a float for a radius
2. ask for and read in a float for the height
3. each of the following functions will calculate some property of a shape (area, volume, circumference, etc)
4. The functions will accept one or two parameters (radius and/or height) and return the proper calculation.
5. There is no input/output (cin or cout) in the function – just the calculation
6. write the following functions

1. float areaCircle(float radius)

where the area of a circle is calculated by

          area = PI * radius * radius

2. float circumCircle(float radius)

where the circumference of a circle is calculated by

          circumference = PI * radius * 2

3. float areaCylinder(float radius, float height)

where the area of a cylinder is calculated by

          area = 2 * PI * radius * radius + height * PI * radius * 2

4. float volumeCylinder(float radius, float height)

where the volume of a cylinder is calculated by

          volume = PI * radius * radius * height

5. float volumeCone(float radius, float height)

where the area of a cylinder is calculated by

          volume = (1 / 3) * (PI * radius * radius * height)

          All input and output (cin and cout) are in maim()

in main()

1. get the radius and height
2. call each of the functions and print out the answer
3. output should look like

radius is ??????

height is ??????

area of the circle is                 ????????

circumference of the circle is ????????

area of the cylinder is            ????????

volume of the cylinder is        ????????

volume of the cone is             ????????

Answer 1

#include <iostream>
using namespace std;

#define PI 3.14159

float areaCircle(float radius) {
    return PI * radius * radius;
}

float circumCircle(float radius) {
    return PI * radius * 2;
}

float areaCylinder(float radius, float height) {
    return 2 * PI * radius * radius + height * PI * radius * 2;
}

float volumeCylinder(float radius, float height) {
    return PI * radius * radius * height;
}

float volumeCone(float radius, float height) {
    return (1.0 / 3) * (PI * radius * radius * height);
}

int main() {
    float radius, height;
    cout << "Enter radius: ";
    cin >> radius;
    cout << "Enter height: ";
    cin >> height;
    cout << "radius is " << radius << endl;
    cout << "height is " << height << endl;
    cout << "area of the circle is          " << areaCircle(radius) << endl;
    cout << "circumference of the circle is " << circumCircle(radius) << endl;
    cout << "area of the cylinder is        " << areaCylinder(radius, height) << endl;
    cout << "volume of the cylinder is      " << volumeCylinder(radius, height) << endl;
    cout << "volume of the cone is          " << volumeCone(radius, height) << endl;
    return 0;
}