Question

Write a PYTHON program that takes the radius of a sphere (a floating-point number) as input and then outputs the sphere’s surface area.

The **Surface Area of a Sphere** is

Surface Area = 4πr²

Surface Area = 4 * PI * radius * radius

Answer #1

```
"""Program for finding the surface area"""
from math import pi
r = float (input (" Enter the radius of sphere: "))
SA = 4 *pi *r * r
print(" Surface Area of Sphere = ", SA ," unit square ")
----------------------------------------------------------------------------------------------
"""Program for finding the surface area by declaring the value """
pi = 3.14
//radius of sphere
radius = 6.34
SA = 4 * pi * radius *radius
print(" Surface Area of Sphere = ", SA ," unit square ")
```

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