8 persons can stay in a cubical room.Each person requires 27m3 on air then the side of the cube is——–​

1 thought on “8 persons can stay in a cubical room.Each person requires 27m3 on air then the side of the cube is——–​”

1. Step-by-step explanation:

   90

   Volume of one cube, v=27 cm

   3

   Therefore, side of a cube s=v

   1/3

   =27

   1/3

   =3 cm

   Two cubes of the same volume joined together to form a cuboid.

   Therefore, the length of cuboid, L=2s=6 cm

   Width of cuboid (B) = Height of cuboid (H) =s=3 cm

   Surface Area of cuboid,

   S.A=2(LB+BH+LH)=2(6×3+3×3+6×3)=2(18+9+18)=90 cm²

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