nipesh1979 nipesh1979
  • 23-02-2021
  • Mathematics
contestada


The area of the four walls of a room is 156 m2. The breadth and height of the room are 8 m and 6 m
respectively. Find the length of the room.​

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jawhuss78 jawhuss78
  • 23-02-2021
Given: Lateral Surface area=156m
Breadth=8m height=6m
⇒ L.S.A=2(bh+lh)=2(l+b)h
⇒156=2(l+8)h
⇒156=2(l+8)×6
⇒l+8=
12
156
​
=13
∴l=13−8=5m
Hence, length of the room=5m
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