silver coin diameter is 40 mm, and surface area 27.70 cm 2 . if the coin divided to coins with 1 nm diameter; what is the surface area for all these coins? how many times greater than the surface area of the large one?
silver coin diameter is 40 mm, and surface area 27.70 cm 2 . if the coin divided to coins with 1 nm diameter; what is the surface area for all these coins? how many times greater than the surface area of the large one?