Question

calculate the surface area of the cubes with edges of 7 dm​

Answer 1

We know the Total surface area of an cube with side 'a' is 6a^2

So,the surface area of the cube with edge as 6dm is 6x(6)^2 dm^2 =>216 dm^2

1dm=10^-1 m

=>1 dm^2 = 10^-2 m^2

Therefore,the total surface area of the cube In m^2 is 216 X 1/100 m^2

=>2.16 m^2

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