A ribbon width 1 is wrapped around a right cylinder and makes 3 revolutions what is the length of?

Question

...  the ribbon. The hight of cylinder is 20 and radius of 8.

Answer

find first the circumference of the base, the circumference of the base makes one revolution
C = 2&pi;r 2&pi;(8) = 50.265

length of ribbon = 3 * C = 3 * 50.265 = 150.795

A ribbon width 1 is wrapped around a right cylinder and makes 3 revolutions what is the length of?

Answers (1)