A hemispherical tank is filled with water and has a diameter of 15 feet. If water weighs 62.4 pounds per cubic foot, what is the total weight of the water in a full tank, to the nearest pound?

55107 lb.

Step-by-step explanation:

The Volume of a hemisphere is half the volume of the sphere

Vol. of sphere = 4π/3

Vol of hemisphere = 4π/6 or 2π/3

Diam = 15,    radius = 7.5   and we will use 3.14 for π

V =

  = 2(3.14)(421.875)/3

  = 883.125 cu ft.

883.125(62.4) = 55107 lb.

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

16.9 times 2.85

step-by-step explanation: