2. If the radius of a body-centered cubic unit cell is 2.55 x 10-8 cm, what is the length of the edge in pm

Step-by-step explanation:

Given that,

The radius of a bcc unit cell is,

We need to find the length of the edge in pm.

We know that,

For a bcc unit cell, the relation between the radius and the length of the edge is given by :

Edge length,

Hence, this is the required soolution.

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