the parallel sides of a trapezium are such that the longer side is 4cm more than the shorter side of the distance between them is 20 cm and the area of trapezium 600 sq cm find the length of the parallel sides

32cm and 28cm

Step-by-step explanation:

Area of a trapezium=0.5 ( sum of parallel sides ) × height

600=0.5( 4+a+a)×20

where a is the length of the shorter side

600÷0.5=(4+2a)×20

1200=(4+2a)×20

1200÷20=4+2a

60=4+2a

60-4=2a

56=2a

56÷2=a

28=a.

since the longer side is 4 cm more than th shorter side , 28 +4=32

b.an increase in a causes b to decrease

i use my brain for prombles like this maybe you could try it

step-by-step explanation: