Answer:
The answer to your question is 7c. V = 14327.82 u³
7c. SA = 1755.26 u²
Explanation:
7c.
Formula
V = 1/3 πr²h
π = 3.14
r = 13
h = ?
-Use the Pythagorean theorem to find h
h² = 30² - 13²
h² = 900 - 169
h² = 731
h = 27
-Calculate the volume
V = (3.14)(13)²(27)
V = 14327.82 u³
7c.
SA = πrs + πr²
-Substitution
SA = (3.14)(13)(30) + (3.14)(13)²
-Simplification
SA = 1224.6 + 530.66
-Result
SA = 1755.26 u²