To find the volume of a sphere you would use the equation:
πr³
You would plug in the radius in r
Your equation would look like this now:
π(7)³
When you solve that you would get:
1436
Since it's 3 dimentional you would use ⇒ ³
Your answer would be B. 1436cm³
Step-by-step explanation:

You multiple those to find area
To simplify this expression you would need to use the Distributive Property of Multiplication.
First you would multiply 3 and y which gives you 3y.
Then you would multiply 3 and 6 which gives you 18.
Lastly you would add these two values leaving you with the expression:
3y + 18
Hope this helps and have a nice day! :)