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kisna ram

· started a discussion

· 1 Months ago

wrng (Question: 367552.0 )

why u r assuming side of square when it is given 9

Question:

A cubic metre of copper weighing 9000 kg is rolled into a square bar 9 m long. An exact cube is cut off from the bar. How much does the cube weighs ?

Options:
A)

1000 kg

B)

10003    kg

C)

300 kg

D)

5003    kg

Solution:

Ans: (b)

  

JIBIN RAJ

· commented

· 1 Months ago

9 is not the side of square its the length of the bar. Hence Volume of square(cross-section) bar is 9*a^2
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