A small cylinder is rolled along a ruler and completes two revolutions. The circumference is the distance around the outside of

Question

3 years ago

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a circle. What is the circumference of the cylinder? A 4.4 cm B 5.2 cm C 8.8 cm D 10.2 cm

1 answer:

ivanzaharov [21] · Answer 1 · 2022-07-21T21:29:54+03:00

Answer; 4.4cm

Explanation: There is a ruler upon which the cylinder start from 1.4cm and reaches 10.2cm

distance traveled =10.2-1.4=8.8

since this cylinder is small so the linear distance can be approximately taked as rotational distance(as in case of point charge) so

2x2πxr =8.8

so the circumference will be 2πr=4.4cm