Question

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The length of a room is two times is breath and 5 times it's height,if the volume of the room is 800 m cube, find the cost of papering it's wall at Rs 15 per m cube​

Answer 1

Answer:

Step-by-step explanation:

l=2b=5h

so b=l/2

    h=l/5

volume = l*b*h

800=l*l/2*l/5

800=l^3/10

8000=l^3

l= 211cm