Answer: b
Step-by-step explanation:
Hey there! I'm happy to help!
To find the surface area of a sphere, here is what you do.
You square the radius.
4²=16
You multiply by 4.
16×4=64
And you multiply by pi!
64×π=64π
Therefore, the surface area of the sphere is A. 64π units². It's that easy!
Now you can find the surface area of a sphere! Have a wonderful day! :D
Answer:
f(5)=225 and f(10)=250
Step-by-step explanation:
The answer is 39.60 all you have to do is add the 2 numbers together.
