12.5 because if you multiply 5 by 2.5 you get 12.5
340.8 cm^2.
72+72+72+62.4+62.4=340.8cm^2.
The two labeled angles are "vertical angles".
Vertical angles are equal.
So ...
14x + 8 = 15x
I'm sure you can handle it now.
Answer:
The radius is 12.5.
Step-by-step explanation:
The volume of a cone is found using the formula . Substitute the values V = 1309 and h = 8. Solve for r.