**C program for area of a**

**sphere**

**Formula of surface area of sphere:**

Surface_area = 4 * Pie * r

^{2}**Formula of volume of sphere:**

Volume = 4/3 * Pie * r

^{3}
Pie = 22/7 or 3.14159265358979323846264338327950288419716939937510...

**C code:**

**#include**<stdio.h>

**#include**<math.h>

**int**

**main**(){

**float**r;

**float**surface_area,volume;

printf("Enter radius of the sphere : ");

scanf("%f",&r);

surface_area = 4* M_PI * r * r;

volume = (4.0/3) * M_PI * r * r * r;

printf("Surface area of sphere is: %.3f",surface_area);

printf("\nVolume of sphere is : %.3f",volume);

**return**0;

}

**Sample output:**

Enter radius of the sphere: 5

Surface area of sphere is: 314.159

Volume of sphere is: 523.599

7. Write a c program to find the area of rhombus.

8. Write a c program to find the area of parallelogram.

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