The surface area of a sphere is

where r is the radius;
The circumference is

so that

using this value we can evaluate the surface area of 1 ball as:

For 100 ball you get:
I think the answer is 10, 20, and 4
Answer:
y=[-4]x+[10]
Step-by-step explanation:
For a line to be perpendicular to another it must have the reverse reciprocal of the opposite line, to find the reverse reciprocal you take your slope, flip the numerator and denominator, and multiply it by -1.
The slope
turns into
and is then multiplied by -1 to become
which can be simplified down to: 
Now that we know the slope we need the line to pass through a point, so we will use point slope form:

Substitute in our slope and point values:

Now solve for y:

Then you will find that line
runs perpendicular to
and intersects point (2,2).
Answer:
Fabric used by each each player for headband is 16.51 inches and fabric used for wristband is 1.99 inches
Step-by-step explanation:
In first case it is given that there are players and 2 coaches
So total number = 44+2 = 46
It is given that 759.46 inches of fabric is used on headbands for 44 players and 2 coaches
So fabric used by each player 
Now in second 87.64 inches fabric is used for 44 players
So fabric used by each players 
So fabric used by wristband is 1.99 inches
The answer is x < 1 or x > 7