Can someone check my work

If the sphere shown above has a radius of 3 units, then what is the approximate volume of the sphere?
A.
9 cubic units
B.
113.04 cubic units
C.
56.52 cubic units
D.
141.3 cubic units

Question

Can someone check my work 

If the sphere shown above has a radius of 3 units, then what is the approximate volume of the sphere?
  A. 
9 cubic units
   B. 
113.04 cubic units
   C. 
56.52 cubic units
  D. 
141.3 cubic units

tate_langdon · Answer

I say the answer is B

mathstudent55 · Answer

Correct.

tate_langdon · Answer

Can you tell me why you think i'm correct @mathstudent55

mathstudent55 · Answer

Because from my experience with your questions, you are either:
1. brilliant
2. lucky guesser
3. good at cheating
or all of the above or a combination of the some of the above.
Based on the above, you are usually correct.

mathstudent55 · Answer

$\Large V_{sphere} = \dfrac{4}{3} \pi r^3$

$\Large V \approx \dfrac{4}{3} (3.14) (3~in.)^3 $

$\Large V \approx 4(3.14) (3^2)~in.^3 $

$\Large V \approx 113.04~in.^3 $

mathstudent55 · Answer

I'm not as smart as you are, so I must go back to basics and use the formula for the volume of a sphere.