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`"Area" = pi * ( "r" )^2`

Enter a value for all fields

The **Square Footage of a Circular Slab** calculator * Circular Slab*computes the area(**A**) of a circular slab based on the radius (**r**).

**INSTRUCTIONS:** Choose your units (feet is the default), and enter the following:

- (
**r**) This is the radius (half of the diameter) of your concrete slab.

**Surface Area:** The surface area of the circular slab is returned in square feet. However, this can be automatically converted to other area units (e.g. square meters) via the pull-down menu.

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