Answer:
1) Radius of the cone = 9.5 cm
2) BA = 90.25 π cm²
3) SA = 384.7 π cm²
Explanation:
1) Radius of the cone = 9.5 cm
2) Base Area of the cone =
![\pi r^2](https://img.qammunity.org/2021/formulas/mathematics/high-school/dlcbuo3stzuipxv6p7f7yl1stpzfah0aij.png)
BA = (π)(9.5)²
BA = 90.25 π cm²
3) Surface Area of Cone =
![\pi r(r+√(h^2+r^2))](https://img.qammunity.org/2021/formulas/mathematics/college/bx4quyc2gjdh6ryrptcd41bs4e207lb1mz.png)
SA = π(9.5)(9.5 + √(29.5)²+(9.5)²)
SA = 9.5π(9.5 + 31)
SA = 9.5π(40.5)
SA = 384.7 π cm²