A h B b 2 The perimeter is the total lengths of all sides the sum of the two bases and the two other sides. Area ½ hab Area of isosceles trapezium 12 c 2 a-b 2 ab Perimeter of Trapezium. The formula for Area of Trapezium can be found by the product of half of the sum of parallel lines and distance between the parallel sides.
Calculate the area of the trapezium shown.
The area of a trapezium is given by Afrac ab 2times h. B base of parallel sides of trapezium. You can see that this is true by taking two identical trapezia or trapeziums to make a parallelogram. Area of trapezoid Area of triangle Area of trapezoid 1 2 base height A 1 2a bh Area of trapezoid Area of triangle Area of trapezoid 1 2 base height A 1 2 a b h.