Question

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

Answer 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