Draw round one on some squared paper and add up the cm^2 inside the foot.
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The answer depends on the shape of the pool. If the pool is of uniform depth, then its volume is the surface area times the depth. If the surface area is measured in square feet, and the depth is measured in feet, then the volume is in cubic feet.1 cubic foot = 6.2288 Imperial gallons.
The surface area of this sphere is 2,827 square feet.
Measuring "area" refers to determining size in two dimensions (e.g., length and width). The resulting measure is typically reported in terms of units of measurement "squared." For example, if a surface is one foot long and one foot wide, the area of the surface is called "one square foot" or "one foot squared."
Square feet measure area. The formula will depend on what you want to know the area of.
A circle of radius r has a circumference of 2*Pi*r and an area of Pi*r*r, where Pi is the constant which is approximately 3.14159. Use the first equation to calculate the radius and then the second to calculate the area.