Number of square metres in one square kilometre is-
1000
10000
100000
1000000
1km=1000m then 1km2=1000×1000m2
The area of a square playground is 256.6404 square metres. Find the length of one side of the playground.
Encircle the odd one out and give reasons for your choice.:
Centimetre, millimetre, kilometre, square metre.