What is the height of a pyramid (with a square base) whose side length is 12 cm and its slant
height is 10 cm?

a.) 22 cm
b.) 8 cm
c.) 2 cm
d.) None of these

We have been given that side length of pyramid the square base is 12 cm and its slant height is 10 cm. We are asked to find the height of the pyramid.

We will use slant height of a pyramid formula to solve our given problem.

,where,

s = Slant height,

h = Height,

a = Each side of square base.

Upon substituting our given values in above formula, we will get:

Switch sides:

Let us square both sides:

Now we will take positive square root of both sides.

Therefore, the height of the pyramid is 8 cm and option 'b' is the correct choice.

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