Square is simply multiplying the length times the width.
An example: A room is 20 feet long and 30 feet wide. Multiply 20x30=600 square feet.
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Multiply by 144.
In order to calculate the square footage you need to find the length and the width of the room in feet. You multiply the length and the width to give you the square footage of the room
Multiply the length by the width to get square footage.
First of all, you need to know the radius of the tank. Second, what does outside square footage mean?
To calculate square footage, you multiply the length by the width of the room. So, if the room measures 10 ft. by 18 ft., your total area is 180 sq. ft.