Answer:
They used 3.14 for pi:


Step-by-step explanation:
is the volume of a sphere with radius r.
I think that is the diameter given in the picture.
The radius is half the diameter.
So the radius is 5 since the diameter is 10.
Plug in this gives you:

Answer:
112-7v
Step-by-step explanation:
Answer:
51
Step-by-step explanation:
X^2-5x+5x-25 (multiply (x-5) with (x+5))
X^2-25 ( -5x+5x =0)
Evaluate f(9) + f(5)= 14f If I didn't answer Your Question fully than tell me please!