the area of a penny is 2.8338cm2
diameter of penny is 19mm radius is 9.5mm area= pi (3.142)(9.5mm)squared= 90.25x3.142=283.565 sq mm
No, "A penny saved is a penny earned".
All error coins need to be seen. Take it to a coin dealer in your area.
Penny from which country?
penny is singular pennies is plural
British penny: 324 mm^2 American penny: 285 mm^2
diameter of penny is 19mm radius is 9.5mm area= pi (3.142)(9.5mm)squared= 90.25x3.142=283.565 sq mm
3.14 (pi) x r2 x3.14 (pi) = Area of circle
We know that air resistance (or atmospheric drag) is what causes a leaf to fall more slowly than a penny. A large leaf that weighs a much as a penny has a much greater surface area than the penny, and all this surface area means that the leaf has more drag. Though the leaf and penny will be accelerated by the same amount of force (because they have the same mass), the leaf will present all that surface area to the air, and this will set up a condition of high drag.
You can get a stack of pennies, measure the height of the stack and then divide by the number of pennies. You can also get the thickness by treating the penny as a cylinder, calculating the area of the face of the penny, then putting a whole lot of them in water, measuring the change of volume to get the total volume of all pennies, then divide by the number of pennies and divide again by the area of the penny to get the thickness.
These were the poor people who only paid a penny to get in also known as the "penny stinkers" they would stand around the stage in the area of the auditorium that had no roof.
try to cover as much surface area as possible.
when the penny is reacted with HCl, there must be somesort of area where the copper on the outside of the penny is removed so that the HCl can react with the zinc inside because HCl does not react with copper. Once the HCl reacts with the Zn inside, it will dissapear and therefore become less dense then the ZnCl2 that is formed which causes the penny to float
The singular possessive of penny is penny's, as in "penny's worth".
You could try a reputable coin dealer in your area or eBay.
You could try a reputable coin dealer in your area or eBay.
Quite close to 0. The majority of the world's population lives in countries whose currency unit is not a penny. The probability for all of those people or all that land area is 0. That leaves only a small land area and a small proportion of people who live where pennies are used.