2' x 4' = 8 square feet.
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SAsphere = 4πr2 = 4 x π x 22 = 4 x 4 x π = 16π = ~50.272 square feet.
(33 x 4) = 132 square feet on the floor (33 x 4) = 132 square feet on the ceiling (33 x height) square feet on each of two walls (4 x height) on each of the other two walls Total = [ 264 + (74 x height) ] square feet
70 square feet equals a surface of 2 feet x 35 feet (or 4 feet by 17.5 feet or 8 feet by 8.75 feet)
12 square feet
Area of any circle = (pi) x (radius)2Radius = 1/2 diameterArea of this circle = (pi) x (2 ft)2 = 4 pi square feet = 12.566 square feet (rounded)