8 persons can stay in a cubical room. Each person requires 27m3 of air. Find the side of room.
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Answer:
Volume of cubical room = Air required by 8 persons
(where a is the side of cubical room)
a3 = 27×8
a = 3√27×8. (3 before '√' sign mean cube root)
a =3√3×3×3×2×2×2
a = 2×3
a= 6m
side of room is 6m.
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