So how do we write the given situation:
one eight pi times the cube of the diameter
=> one eight = 1/8
=> pi = 3.14
=> cube of diameter = d^3
Now, that we have the simplified equivalent of the given problem. Let’s start writing it into equation
=> 1/8pi (d^3)
You can now start solving with this given situation. Just change the pi with its original value which is 3.14