A rectangular department store, 80 m by 60 m is to be built on a city block having an area of 9000 m2. There is to be a uniform strip around the building for a lawn. How wide is the strip (to the nearest hundredth of a metre)?

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies