Question

the area of trapezium is 2400 square metre one of its parallel side is 75 metre if the distance between the parallel sides is 40 m find the length of the Other parallel side

Answer 1

Area of a trapezium= 1/2 × (sum of two parallel sides)× height
2400= 1/2×(75+x)×40
2400= 75/2+x/2 ×40
2400/40= (75+x)/2
60×2=75+x
120-75= x
45=x

Answer 2

hi ,

let a and b are the two parallel sides of the 

trapezium ,

a = 75 m ; 

b = ? 

height between parallel sides ( h ) = 40 m

area of the trapezium = 2400 m²

( a+ b ) h /2 = 2400

( 75 + b ) × 40/2 = 2400

75 + b = 2400/20

75 + b = 120

b = 120 - 75

b = 45 m

I hope this helps you.

: )