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Find the surface area of the cone to the nearest square unit. Use π = 3.14.

Find the surface area of the cone to the nearest square unit. Use π = 3.14.-example-1
User Leosar
by
2.8k points

2 Answers

12 votes
12 votes
  • radius=r=6cm
  • l=12cm

So

TSA

  • πr(r+l)
  • π(6)(6+12)
  • 6π(18)
  • 108π
  • 339.12cm²
User Ids Van Der Zee
by
3.2k points
21 votes
21 votes

Answer:

339.12 cm²

Step-by-step 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
User Sujee Maniyam
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3.3k points