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The circumference of this CD is about 37.7 cm. The diameter of the hole in thecentre is 1.5 cm. What is the distance from the outside edge of the CD to the inside edge?

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Adioabiolaidn

The distance from the outside edge of the CD to the inside edge is; 6.0 - 0.75 = 5.25cm.

Circumference, diameter and radius

Since the circumference of the CD is about 37.7cm

We can determine the radius of the CD as follows;

Circumference, C = 37.7 = 2 π × r.

  • r = 37.7/2 × 3.142

  • r = 6.0cm.

However, the diameter of the hole in the center is; 1.5cm, therefore, the radius of the hole in the center is; 1.5/2 = 0.75cm.

Ultimately, the distance from the outside edge of the CD to the inside edge is; 6.0 - 0.75 = 5.25cm.

Read more on circumference:

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