Question

find the area of trapezium whose parallel sides are 57 cm and 33 cm and the distance between them is 13 cm

Answer 1

hey...

area of a trapezium = 1/2 × ( a + b ) h

= 1/2 × ( 57 + 33 ) 13

= 1/2 × 90 × 13

= 45 × 13

=585 cm^2

Answer 2

area of trapezium= 1/2(sum of parallel sides)(altitude)
                            = 1/2(57+33)(13)
                            = 1/2(90)(13)
                            =  585 square cm