Will vote and brainliest! 1.how is the volume formula derived for each of the following: a)cylinder b)pyramid c)cone 2.how do changes in the dimensions of a cube change its volume? if the side length was doubled how would the volume change? 3.what are the two-dimensional cross-sections (parallel, perpendicular, and diagonal to the base) for the following: a)cylinder b)cone c)sphere d)square pyramid 4.how are the cross-sections in #3 related to cavalieri's principal?

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

the answer is d

hope this