Area Formulas

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