Area Formulas
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Area of Trapezoid
A = 1/2(a + b) h a = base 1 b = base 2 h = height
Area of Square
A = a^2 a = length of side
Area of Parallelogram
A = b x h b = base h = height
Area of Ellipse
A = pie x a x b a = semi-minor axis b = semi major axis
Area of Circle
A = pie x r^2 r = radius
Area of Rectangle
A = wh w = width h = height
Area of Trianlge
A = 1/2 b h b = base h = height
Area of Sector
A = 1/2 x r^2 x 0 r = radius 0 = angle in radian
