Question

The area of trapezium is 180 cm.sq and height is 12 cm. If one of the parallel sides is double that of other , find the two parallel sides.​

Answer 1

Answer:

smaller side =10cm

larger side=20cm

Step-by-step explanation:

area of trapism=0.5*(sum of parallel sides)*height between the 2 sides

180=0.5*(a+2a)*12

180=18a

a=10cm

Answer 2

Step-by-step explanation:

let side of trapezium is x

and other is 2x

height, h = 12cm

Area of trapezium = 1/2×(sum of parallelsides)×h

180 = 1/2 × (2x+x)×12

180×2/12 = 3x

30 = 3x

x = 10cm

2x = 20cm