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The formula for the surface area of a sphere is 4πr^2, and for volume it is (4/3)πr^3, where r is the radius. Given the surface area as 432m^2 and volume as 864m^3, we can calculate the radius using the formulas and then find the ratio of surface area to volume. Using these equations, the ratio of surface area to volume for the sphere is 1:2.
-- "864m square" is not a volume. "864m cubed" is a volume.
-- A sphere can't have those measurements.
If it's really a sphere with surface area of 432 m2, then its volume is 844.3 m3.
If it's really a sphere with volume 864 m3, then its surface area is 438.7 m2.
-- The answer to the question is: The ratio of 432 m2 to 864 m2 is 0.5 .
-- If those are really an area and a volume, then the ratio of 432 m2 to 864 m3 is 0.5 per meter.
Strictly speaking, such a sphere is not possible.Even allowing for rounding, the largest surface area is 588.5 m^2 which implies a radius of 6.84 m or 6.8 m.
Also, the smallest possible volume is 1371.5 m^3 which implies a radius of 6.89 or 6.9 m.
That said, the surface area to volume ratio is 588/1372 = 0.43 m-1.
A sphere can either have a surface area of 432 m2 but not a volume of 864 m3, or it can have a volume of 864 m3 but not a surface area of 432 m2.