### Functions
>Write functions that will calculate and return the following:
- `sphere_volume(radius)`
Where r is the radius
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- `sphere_surface(radius)`
where r = radius of sphere
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- `cylinder_volume(radius,height)`
where r = radius of sphere and h = height
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- `cylinder_surface(radius,height)`
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- `cone_volume(radius,height)`
Where r = radius of base of cone , h = height of the cone (perpendicular to base)
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- `cone_surface(radius,height)`
Where l = slant height of a right circular cone
Due: Monday, 7 October 2019, 6:00 AM
