1 Steel shingle metal roof: Installation can cost at least $600 per square foot for the shingles. 2  Or run $750 per square foot for a standing seam steel roof. 3  Aluminum metal roof: Can cost anywhere between $700 and $1,200 per square foot.
Mass is the amount matter in an object. Mass is usually expressed in grams/pounds. For example, if you had a mass of 100 pounds and you went to the moon, you would still have â¦ a mass of 100 pounds, because there is 100 pounds of matter in you. However, your weight, or the gravitational pull on you, would change.
Definition of mass for Students. 1  1 : a large quantity or number A great mass of people pushed through the gate. 2  2 : an amount of something that holds or clings together a mass of clouds. 3  3 : large size : bulk an elephant's huge mass.  4 : the principal part : main body The great mass of voters supported change.