Ronald is changing the shape of his backyard from 100 feet long by 22 feet wide to a square that has the same area. what is the perimeter of the square backyard, rounded to the nearest whole number?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal