Question

the distance between parallel sides of trapezium is 3 centimetre one of its parallel sides is 8 cm and its area is 37.5 CM square find the length of of the Other parallel side

Answer 1

1/2*3(8+x)=37.5;12+3x/2=37.5;3x/2=25.5;3x=51;x=17
other parallel side=17cm

Answer 2

since area of trapezium = 1/2 × ( sum of || sides )× height
take other || side be x
so
37.5 = 1/2 × (8 + x) × 3
37.5 × 2/3 = 8 + x
x= 12.5 × 2 - 8
x= 17 cm