C Program To Calculate Surface Area of Cone

Given the values for radius and height of a Cone, write a C program to calculate Surface Area of the Cone.

Formula To Calculate Surface Area of Cone

Surface_Area = PI * radius * (radius + sqrt(height * height + radius * radius ));
where PI is approximately equal to 3.14

Note: sqrt() is a builtin method present in math.h header file.

Related Read:
Basic Arithmetic Operations In C

Expected Output for the Input

User Input:
Enter radius and height of the cone
2
5

Output:
Surface Area of Cone is 46.378838

Video Tutorial: C Program To Calculate Surface Area of Cone

Source Code: C Program To Calculate Surface Area of Cone

#include<stdio.h>
#include<math.h>

int main()
{
    const float PI = 3.14;
          float r, h, s_area;

    printf("Enter radius and height of the cone\n");
    scanf("%f%f", &r, &h);

    s_area = PI * r * ( r + sqrt(h * h + r * r) );

    printf("Surface Area of Cone is %f\n", s_area);

    return 0;
}

Output 1:
Enter radius and height of the cone
8
18
Surface Area of Cone is 695.766663

Output 2:
Enter radius and height of the cone
5
14
Surface Area of Cone is 311.897278

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