Find the the nmetric area units of a Rectangle, Triangle, Parallelogram, aTrapezium or a Circle. Rectangle Enter the length of the rectangle cm Enter the width of the rectangle cm Press 'Find Area' for the area of your rectangle to be calculated Triangle Enter the length of the base cm Enter the vertical height of the triangle cm Press 'Find Area' for the area of your triangle to be calculated Parallelogram Enter the length of the base cm Enter the vertical height of the parallelogram cm Press 'Find Area' for the area of your parallelogram to be calculated Trapezium Enter the length of the top side cm Enter the length of the bottom side cm Enter the height of the trapezium cm Press 'Find Area' for the area of your trapezium to be calculated Circle Enter the radius of the circle cm Press 'Find Area' for the area of your circle to be calculated Category: Area