Triangle
Area[A] = 0.5 * b * x
cm
cm
Rectangle
Area[A] = w * l
cm cm
Parallelogram
Area[A] =b * h
cm cm
Rhombus
Area[A] = 0.5 * d1 * d2
cm cm
Pentagon
Area[A] = 0.5 * p * b
cm cm
Ellipse
Area[A] = πab
cm cm