Question

the area of tapezium is 210 cm2 and it's height is 14 cm. if one of the parallel sides is double that of the other,find the two parallel sides

Answer 1

let one of parallel sides be x
another side will be 2x
area=1/2{(x+2x)*height }
210=1/2{(3x) *14}
210=3x*7
210=21x
x=10(ans)
2x=20(ans)