In a regular cone, the angle between base and slanting surface is 45 degrees and the base diameter is 100 mm. If a helix is to be built on such a cone with a pitch of 5. How many revolutions do the helix made in this cone?

In a regular cone, the angle between base and slanting surface is 45 d

1.	In a regular cone, the angle between base and slanting surface is 45 degrees and the base diameter is 100 mm. If a helix is to be built on such a cone with a pitch of 5. How many revolutions do the helix made in this cone?
A.	14.1
B.	18
C.	10
D.	20
Answer» D. 20

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In a regular cone, the angle between base and slanting surface is 45 degrees and the base diameter is 100 mm. If a helix is to be built on such a cone with a pitch of 5. How many revolutions do the helix made in this cone?

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