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allochka39001 [22]
2 years ago
10

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

Mathematics
2 answers:
Marrrta [24]2 years ago
7 0

Hope this helps

Answer: 5541.77

natali 33 [55]2 years ago
3 0
  • formulae is 4πr²
  • 4×22/7×21²
  • 4×22×3×21
  • cause 7 divided the first 21 which gave it 3
  • answer=5544cm²
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