43.0k views
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

User Megamug
by
5.9k 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.
User Scott Wolf
by
5.6k points