Respuesta :

fieryanswererft

Answer:

339.12 cm²

Explanation:

surface area of cone: πr² + πrl

where "r" is radius, "l" is slant height

Here given:

  • radius: 6 cm
  • slant height: 12 cm

Solve for surface area:

  • πr² + πrl
  • (3.14)(6)² + (3.14)(6)(12)
  • 113.04 + 226.08
  • 339.12 cm²
  • radius=r=6cm
  • l=12cm

So

TSA

  • πr(r+l)
  • π(6)(6+12)
  • 6π(18)
  • 108π
  • 339.12cm²