Determine the area of one face (2m x 2m = 42m). Multiply by the number of faces on a cube - 6.
So, 6 x 42m = 242m total surface area.
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Total surface area = (2*pi*radius2)+(diameter*pi*height)
Total surface area = (2*pi*r2)+(pi*r2) Area = 300*pi in square units
Total surface area = (2*pi*r2)+(2*pi*r*height) Surface area = 69.11503838 or 69 square units
Surface area including the underneath of the hemisphere = pi*radius2 + 2*pi*radius2 Total surface area = 27pi square units
Use a calculator and you'll get yurh answer