Ummm I think 4 hope this helps
Answer: 2???????
It's too short. Write at least 20 characters to explain it well.
Put the given information into the formula and solve for the variable of interest.
.. V = π*r^2*h
.. 252π = π*r^2*7
.. (252π)/(7π) = r^2
.. 36 = r^2
.. 6 = r
The radius is 6 cm. Selection D is appropriate.
_____
We would prefer that the offered selections had the appropriate cm units attached.
1st problem:
A = 630 cm
2nd problem:
A = 104 cm
All I can see on the picture you provided.
