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What is the surface area of a sphere with a radius of 21 units
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22 votes
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What is the surface area of a sphere with a radius of 21 units

User Josh From Qaribou
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2 Answers

24 votes
24 votes
  • formulae is 4πr²
  • 4×22/7×21²
  • 4×22×3×21
  • cause 7 divided the first 21 which gave it 3
  • answer=5544cm²
User Param
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3.0k points
18 votes
18 votes

Hope this helps

Answer: 5541.77

User Oded Niv
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3.4k points
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