Answer:
$6.30 per DVD
Step-by-step explanation:
25.20/4= 6.3
The circumference of a circle is equal to the diameter times pi. So, let's look at what happens if you double the radius of a circle -- say from 2 to 4. The area will go from 12.56 to 50.24. This means that it has quadrupled.
Answer:
The answer to number 7 is -1.25
The answer to number 8 is 1.25