Question

Using the c++ language

1) Create a function that calculates the area of a circle "circeArea ()". The function should take a single float parameter radius and return a float area.

2) Create a function to calculate the area of a rectangle.

3) Creat a function to calculate the area of a triangle when given base and height as parameters provided by the user.

Answer 1

#include <iostream>

using namespace std;

// 1
float circeArea(float radius) {
    return 3.14159 * radius * radius;
}

// 2
float rectangleArea(float length, float width) {
    return length * width;
}

// 3
float triangleArea(float base, float height) {
    return 0.5 * base * height;
}

int main() {
    float radius, length, width, base, height;
    cout << "Enter radius of circle: ";
    cin >> radius;
    cout << "Area of circle is " << circeArea(radius) << endl;

    cout << "Enter length of rectangle: ";
    cin >> length;
    cout << "Enter width of rectangle: ";
    cin >> width;
    cout << "Area of rectangle is " << rectangleArea(length, width) << endl;

    cout << "Enter base of triangle: ";
    cin >> base;
    cout << "Enter height of triangle: ";
    cin >> height;
    cout << "Area of triangle is " << triangleArea(base, height) << endl;
    return 0;
}