challenge activity

2.4.2: Numeric types: Floating-point.

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The volume of a sphere is given by sphere_vol=4.03.0sphere_radius3. Read sphere_radius from input as a float. Then, compute sphere_vol using the formula.

Ex: If the input is 2.60, then the output is:

73.62

Note:

• Use math.pi for .
• sphere_radius3 can be computed using using sphere_radius * sphere_radius * sphere_radius.