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A cylinder has a diameter of 10 decimeters. What is the length of the curved surface? 78.5 decimeters 31.4 decimeters 62.8 decimeters 15.7 decimeters

A cylinder has a diameter of 10 decimeters. What is the length of the curved surface? 78.5 decimeters 31.4 decimeters 62.8 decimeters 15.7 decimeters
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5 votes
A cylinder has a diameter of 10 decimeters. What is the length of the curved surface?

78.5 decimeters
31.4 decimeters
62.8 decimeters
15.7 decimeters

asked
User Megamug
by
8.1k points

1 Answer

10 votes
The length of the curved surface is the circumfrence of a circle with radius r = 10/2 = 5 decimeters.

Length of curved surface = 2π x 5 = 10π ≈ 31.4 decimeters.
answered
User Scott Wolf
by
8.0k points
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