Question

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Answer 1

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Answer 2

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7. Volume of Godown= lxbxh
Volume of Godown= (40x25x15)m³
Volume of Godown= 15000m³
Again,

Volume of each wooden crates = lxbxh
Volume of each wooden crates= (1.5x1.25x0.5)m³
Volume of each wooden crates= 0.9375m³

No.of wooden crates in Godown= Volume of Godown/Volume of Wooden Crates

No. of Wooden Crates= (15000/0.9375)

No. of Wooden Crates= 16000

8. Here,
=> a³= 1/8x12x12x12
=> a³= 1/2x2x2 x12x12x12
Here all three 2 will cancel 12 and quotient will be 6.

=> a³= 6x6x6 cm³
=> a³= 6³ cm³
=> a = 6 cm

Now,

Ratio of surface area= 6x (side of big cube)²/6x(sides of small cube)²

Ratio of Surface area= 6x12x12/6x6x6

=> 2x2/1
=> 4/1
or 4:1

9. Flowing of water per hour = 2 km
Now, convert km into m
Flowing of water per hour= 2x1000= 2000m

Flowing rate of water in 1 minute= 2000/60
Flowing rate of water in 1 minute= 100/3

River should be in the form of cuboid,

Whose length= 100/3 m
breadth= 40 m
height = 3 m

Now, Volume of water that falls in river per minute= Volume of cuboid

=> Volume of Cuboid = lxbxh
=> Volume of Cuboid = (100/3x 40 x 3) m³
( Both 3 will cancel eachother)
=> (100x40) m³
=> 4000 m³ or 4000 L.


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