Calculate the amount of concrete you will need to pour an Ellipse (Oval) shaped slab, using feet and inches for measurements.
Area = 𝛑MN
Perimeter = 2𝛑√(M²+N²)/2
where 𝛑 equals 3.14159
M is length A ÷ 2
N is length B ÷ 2
To convert cubic feet to cubic yards, multiply cubic feet * 0.037037037037037
To convert cubic feet to cubic metres, multiply cubic feet * 0.028316846592
To convert cubic yards to cubic metres, multiply cubic yards * 0.764554857984
Length A = 22 feet Length B = 10 feet Depth = 6 inches
M = 22 ÷ 2 M = 11 N = 10 ÷ 2 N = 5
3.14159 * 11 * 5 = 172.787595947 rounded to 172.79
The surface area of this slab is 172.79 square feet.
2 * 3.14159 * √(11² + 5²) ÷ 2
2 * 3.14159 * 8.544 = 53.683558797 rounded to 53.6
The perimeter (circumference) of the slab is 53.6 lineal feet.
Multiply the area square footage by the depth of the slab. First, convert the 6 inches to feet by dividing by 12.
6 ÷ 12 = 0.5
6 inches = 0.5 feet
172.79 * 0.5 = 86.395 rounded to 86.4
You will need 86.4 cubic feet of concrete for this slab.