**The Program in C to compute the volume and surface area of a sphere of any radius r is given below:**

```
#include <stdio.h>
#include <math.h>
int main() {
double radius, volume, surfaceArea;
printf("Enter the radius of the sphere: ");
scanf("%lf", &radius);
// Volume of sphere = 4/3 * pi * r^3
volume = 4.0/3.0 * M_PI * pow(radius, 3);
// Surface area of sphere = 4 * pi * r^2
surfaceArea = 4 * M_PI * pow(radius, 2);
printf("Volume of the sphere is: %lf\n", volume);
printf("Surface area of the sphere is: %lf\n", surfaceArea);
return 0;
}
```

## Output:

Enter the radius of the sphere: 5

Volume of the sphere is: 523.598776

Surface area of the sphere is: 314.159265

## Pro-Tips**💡 **

This program prompts the user to enter the radius of a sphere and then uses the `pow()`

function from the `math.h`

library to calculate the volume

and surface area using the formulas 4/3πr^3 and 4πr^2 respectively, where pi is a predefined constant in `math.h`

.

The volume and surface area are then printed to the console.

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