Well, isn't that a happy little question! To find the square footage of a rectangle, you simply multiply the length by the width. So for a 100 feet by 80 feet rectangle, you would multiply 100 by 80 to get 8,000 square feet. Just imagine all the wonderful paintings you could create on a canvas that size!
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44.4 square feet.
80 acres = 3,484,800 square feet
10' by 10' with 8-ft ceilings: -- Floor = 100 square feet -- Ceiling = 100 square feet -- Each wall = 80 square feet Total interior surface area of the room = (2 x 100) + (4 x 80) = 520 square feet. (Less windows, recessed light fixtures, doors, electrical outlets, etc.)
You have to multiply the two numbers to get the square footage. In this problem the results will be 6,400 square feet.
To convert the dimensions of a lot from feet to acres, you first need to calculate the total square footage. In this case, 80 feet x 100 feet equals 8,000 square feet. To convert square feet to acres, divide by 43,560 (the number of square feet in an acre). Therefore, a lot measuring 80' x 100' is equivalent to approximately 0.1837 acres.