A solid sphere of mercury with a radius of 2mm breaks into eight equal spheres, What is the radius of each of those spheres?

Step-by-step explanation:

it is a quarter of a millimetre

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."