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Surface Area = πr2 + πrs Substitute in the appropriate values for surface area and r, and then solve for s.
find the surface area of one of the faces (all of the faces are the same if it is a true cube) for example if the length is 2 and the width is 2 then u multiply that and get the surface area of that then since there is 6 faces to a cube so u multiply the surface area of one of the faces by 6
The surface area of a sphere can be calculated with the formula: A = 4[pi]r2 Plug in r: A = 4[pi](8)2 And solve: A = 256[pi]
Use the formula for the volume. Replace the data you know (radius and volume), and solve for the missing data (the height). Once you have this height, it is easy to use the formula for the surface area.
It is the surface area of the two ends plus the surface area of the curved surface. Surface area of each end is pir2 Surface area of the curved surface is 2pirh Total surface area = 2pir2 + 2pirh