This is a bonus question worth 5 points that I will add manually. The three pink balls fit inside the tube with no space for the balls to move.
The radius of one ball is 4.
Find the volume of the extra space inside the tube (the space outside the balls but inside the tube).
Round to the nearest tenth.

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

i believe a. 12x≥120 is the answer