Question

5. A room is 12 m long, 7.8 m broad and 5 m high.
एक कमरा 12 मीटर लंबा, 7.8 मीटर चौडा और 5 मीटर ऊंचा है।
(a) How much airdoes it contain?इसमें कतनी हवा होती है?
(b) How many boys can sit in there room. If each boy occupies 26 cubic metres of air space?
यस्म में कतने लड़के बैठ सकते हैं। यटि प्रत्येक लड़का 2.6 क्यूबिक मीटर वायु स्यान घेरता है।
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Answer 1

Answer:

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Answer 2

▪Given:-

length of room - 12m

width of room - 7.8m

height of room - 5m

▪Additional information:-

||●|| Amount of air conatin by room is equal to its volume.

||●|| And,before solving the question check their units,if units are diffrerent then make it same.

CALCULATION:-

i. Volume of room = l × b × h

= 12m × 7.8m × 5m

= 468m^3.

Therefore,468m^3 air contained by room.

ii. Volume occupies by a boy - 26m^3

And,total volume of air - 468m^3

So,Number of boys can sit in the room is

= volume of air / volume of a boy

= 468m^3 / 26m^3

= 18 boys .

therefore, 18 boys can sit in the room.

Note,in above question in english line 26 m^3 given but in hindi line 2.6m^3 given

Here, I use 26m^3 .