deepeshvcd6273 deepeshvcd6273

25-07-2020
Mathematics

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Ten turns of a wire are helically wrapped around a cylindrical tube with outside circumference 4 inches and length 9 inches. The ends of the wire coincide with ends of the same cylindrical element. Find the length of the wire. (a) 41 inches (b)36 inches (c) 40 inches (d) 90 inches

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devishri1977 devishri1977

25-07-2020

Answer:

b) 36 inches

Step-by-step explanation:

Length of the wire = Outside circumference of the cylindrical tube * length of the cylinder

= 4 * 9

= 36 inches

Length of the wire will be same to the surface area of the cylinder

Surface area of cylinder = circumference * length

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