Question

two cross roads,each of width 10m.cut at right angles through the centre of a rectangular park of lenght 100m and breadth is 300m and parellal to its lines find the area of the roads . also find the area of the park excluding .give the answer in hectare

Answer 1

it's easy...
the area of the field is 300x100=30000
now area of the road parallel to the length will be 10x300=3000
and the area of the road parallel to the width will be 10x100=1000
so the area covered by the road will be=3000+1000=4000
so the area of park excluding the roads is 30000-4000=26000 m^2....
niw simply convert it to hectares

Answer 2

Length of garden=90m

Breadth of garden=75m

Area of garden =length×Breadth= 90×75=6750m2

New breadth=90+10=10m

New length=75+10=85m

Area of rectangle with path=100×85=8500m2

Area of path=Area of garden including with path _ Area of garden=8500m2_6750m2=1750m2