She has a total of 45 CDS.
One Shelf Have 15 Cds
Multiply 15 x 3 and you have 45 CDs total
45-15= 30
30/3= 10
The answer will be 10 days
Have a nice day
Answer: 0.8 radians
Step-by-step explanation:
To solve this exercise you must apply the formula shown below:

Where S is the arc lenght, r is the radius of the circle and
is the central angle in radians.
Solve for the central angle:

Now, when you susbtitute the value of the arc length and the radius, you obtain that the central angle is:

Answer is 50cm, to get the diameter you divide the circumference by pi.