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 by 144
37ft by 40 inches is an area of 123.3 square feet.
Calculate attic square footage, calculate how much free area you need by dividing the attic square footage by 300. Convert the square feet needed to inches. Split the amount of free area needed equally between the intake and the exhaust. Divide that by 60, for how many vents you'll need.
25 square feet.
4050
45.33 square feet.
68ft2
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
To calculate square footage of a pipe you need to use the area formula of a circle, a=1/2bh. then find the circumference of the entire pipe.
Multiply by 144
37ft by 40 inches is an area of 123.3 square feet.
Calculate attic square footage, calculate how much free area you need by dividing the attic square footage by 300. Convert the square feet needed to inches. Split the amount of free area needed equally between the intake and the exhaust. Divide that by 60, for how many vents you'll need.
25 square feet.
Lay out or stand up the piece you're interested in. -- Take out your tape and your calculator. -- Measure the length of the piece, in inches. -- Then measure the width of the piece, in inches. -- Multiply the two numbers. -- Divide the product by 144. The result is now the square footage of the piece or area you measured
170" x 378" = 446.25 square feet.
It is 181.25 sq ft.