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antiseptic1488 [7]

3 years ago

9

A compact disc has a radius of 6 centimeters.

2 answers:

Vika [28.1K]3 years ago

5 0

Circumference is $2\pi{r}=37.7$ (approx.)
Speed is 4 times that. That is, 150.8 cm/s or 1.508 m/s.
If we get a point at distance 3 cm, we take the radius half of that. The circumference also gets half, so does the linear speed. We get 0.754 m/s or 75.398 cm/s.

alex41 [277]3 years ago

5 0

Answer:75.389

Explanation:

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