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.
Earth is the densest planet in the solar system because of its metallic core and rocky mantle. Jupiter, which is 318 more massive than Earth, is less dense because it is made of gases, such as hydrogen. Earth's mass is 6.6 sextillion tons (5.9722 x 10 24 kilograms). It volume is about 260 billion cubic miles (1 trillion cubic kilometers). The total surface area of Earth is about 197 million square miles (510 million square km).