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Somdev kumar

· started a discussion

· 1 Months ago

BC (Question:269969.0)

Here dimeter should be used in place of 15 to get the length of one round string

Question:

A thread is wound on a cylinder such that it make exactly twenty-four complete turns around the cylinder. The two ends of thread touch the top and bottom of the cylinder. If the cylinder has a perimeter of 15 cm and its curved surface area is 2880 cm2, then find the length of the string.

Options:
A)

308 cm

B)

408 cm

C)

1612 cm

D)

1212 cm

Solution:

Ans: (b)

  

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