Let volleyball be v and let basketball be b.
v : b = 4 : 7, b = 21
v : 21 = 4 : 7
v/21 = 4/7
7*v = 4*21
v = 4*21/7
v = 4*3
v = 12
Volleyballs are 12
Hope this helps.
Josiah then Taylor and last is Layla
Answer: 8.5π
<u>Step-by-step explanation:</u>
If I understand the question correctly, the entire circle has an Area of 9π and you are looking for the Area of the shaded region which has a central angle of 
the section of the circle that is shaded is 
Area of the shaded region is: 