If the perimeter of one face of a cube is 20 cm,
then its surface area is
(a) 120 cm2
(b) 150 cm2
(c) 125 cm2
(d) 400 cm2
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B) 150 cm square units
Anonymous:
answer required detail
Perimeter of the one side of cube(square) = 4a = 20
Hence "a" = 20/4 = 5
Surface area of cube is 6a^2
6(5)^2
6(25)
150 cm^2
Hence "a" = 20/4 = 5
Surface area of cube is 6a^2
6(5)^2
6(25)
150 cm^2
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