Question

Perimeter of square field is 8km. Find its area in hectares

Answer 1

side= 2 km = 2000m
area= 2000×2000
=4000000
= 4×100×100×100
= 400 hectares

Answer 2

4a=8000
a=8000/4=2000
area=a2
=2000×2000 m
=4000000m
=4000000/10000 hectares
=400 hectares