A = b · h

Area of Trapezoid

Area of a regular polygon

Area of a polygon

The area is obtained by triangulating the polygon and adding the area of these triangles.

A = T1 + T2 + T3 + T4

Circle Area

Circular Sector Area

Area of a Circular Segment

The circular area of the segment AB = Area of the circular sector AOB - Area of triangle AOB

Lune of Hippocrates

Area of the lune = area of the semicircle − area of circular segment.

Area Enclosed between Two Concentric Circles

Area of a Circular Trapezoid

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