Mathematics
Rectangle area
Calculates rectangle area from width and height.
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Trapezoid area
Calculates trapezoid area from two parallel sides and height.
Triangle area
Calculates triangle area from base and height.
Triangle area from base and height
Calculates triangle area from base and height.
Annulus area
Calculates annulus area from outer and inner diameters.
Circle area
Calculates circle area from diameter.
Circle sector area
Calculates circle sector area from radius and angle in radians.