Answer:
use the cymath calculator
Step-by-step explanation:
SA of a cylinder: 2

r² + 2

rh
r = radius of base
h = height of cylinder
Plug in 3 for r and 5 for h in the formula.
2

3² + 2

(3)(5)
Use a calculator to solve.
2

3² + 2

(3)(5) =
150.8 ft²
Sin∠R = ST/RS ⇒ ST = RS * sin40° = 9 * 0.6428 ≈ 5.8
equivalent to 5/24 is 15/72 (multiply top and bottom by 3)
answer is d. 15/72