Question

a playground measures 300m by 170m. find the cost of planting grass on this at the rate of rupees 80 per hectare.

Answer 1

to find the cost of planting grass we have to find area of the field so
area of field =l×b
=300×170=51000sqare
now convert into hectare
i t will be 51000/10000
as 1 hectare=10000m sq
so area field =5.1 hectare sq
now cost = 5.1 x0.80 p
=
0.408 p

Answer 2

Area=300*170
=51000m square
1 hectare =10000m square
=51000m square =5.1 hectare
5.1*80=408