nickel has an approximate diameter of 20 mm and an approximate thickness of 2 mm what is the approximate volume of a stack of 40 nickels?

The approximate volume of a stack of 40 nickels is 25132.741 cubic milimeters.

Step-by-step explanation:

A nickel can be modelled by the formula of a right cylinder, the approximate volume of the stack of nickels (), measured in cubic milimeters, is the product of the number of elements (), no unit, and the volume of each element (), measured in cubic milimeters. That is:

(1)

By volume equation of right cylinder, we have the following formula:

(2)

Where:

- Amount of nickels, no unit.

- Diameter of nickel, measured in milimeters.

- Thickness of nickel, measured in milimeters.

If we know that , and , then the net volume of the stack of nickels is:

The approximate volume of a stack of 40 nickels is 25132.741 cubic milimeters.

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140