Answer:
Step-by-step explanation:
The roll of nickels forms a cylinder
cylinder area includes the sides and the round areas
round areas = pi r^2 there is two so 2 pi r^2
= 2 pi (.835/2)^2
and the side area pi x d x h
pi x .835 ( .077 x 40) (there are 40 nickels in $ 2
Add the areas to get the total ......
56%
