Question

A length 550cm of thin thread wraps around a cylinder exactly 25 times. Calculate the circumference and radius of the cylinder( take 22/7

Answer 1

Answer:

Explanation:

550 cm wire 25 times means, 25 circles around the cylinder.

circumference for one circle,

                                          2πr = (550/25) x 1

                                           2πr = 22

                                             r = 22 x 7/( 2 x 22)

                                              r= 3.5 cm