Question

how many tiles measuring 20cmx20cm each will be required to pave a 1.5m wide footpath around a grassy plot of 25m x16m?

Answer 1

Length of original plot=25m

Breadth of the plot=16m

Now,to make a path all around this of width 1.5m

The length of new rectangular plot =25+(1.5+1.5)=28m

The breadth of new rectangular plot =16+(2.5+1.5)=19m

Area of new plot=28*19=532m sq

Area of old plot=25*16=400m sq

Area of the footpath=532-400=132m sq

Area of tile=20*20cm sq=0.2*0.2m sq=0.04m sq

No. of tiles required=132/.04=3300

Answer 2

Answer:

Refer the above pic