A sphere
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Math
When the surface area and the volume are the same, the height has a value of one unit. Example based on values given: A=LxW = 25x5 = 125 sq ft. V= LxWxH = 25x5x1 = 125 cu ft. The surface area and the volume have the same value.
Volume of a sphere = 4/3*pi*radius3 Surface area of a sphere = 4*pi*radius2
The geometric mean of 3 and 75 is 15.0
Well, darling, the surface area of a sphere is given by the formula 4πr², where r is the radius. So, if the surface area is 49π, then the radius squared is 49, making the radius 7 cm. Now, the volume of a sphere is (4/3)πr³, so plugging in a radius of 7 cm gives a volume of 179π cubic cm. Voilà!