Question

find the height of a room 15m long, and 10 m wide the area of whose floor and celling together is equal to the area of the 4 walls

Answer 1

Answer:

1200m3

Step-by-step explanation:

Area of floor + Area of ceiling =Area of four walls

⇒lb+lb=2×h×(l+b), where l, b, h are the length breadth and height of the hall

⇒lb=h×(l+b)

⇒15m×10m=h×(15m+10m)

⇒h= 15 ×10/27m = 20/3 m

∴ Volume of the hall =l×b×h=15m×10m×20/3m = 1200m3

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