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What is the surface area of a sphere with a 4 ft diameter (round to 1 decimal)? A) 12.6 ft2 B) 16.7ft2 C) 50.2 ft2 D) 100 ft2​
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38 votes
38 votes
What is the surface area of a sphere with a 4 ft diameter (round to 1 decimal)?

A) 12.6 ft2
B) 16.7ft2
C) 50.2 ft2
D) 100 ft2​

User Souperman
by
3.4k points

1 Answer

22 votes
22 votes
  • Radius=Diameter/2
  • Radius=r=4/2=2ft

TSA:-

  • 4πr²
  • 4π(2)²
  • 3.14(4)(4)
  • 16(3.14)
  • 59.24ft²
User Gianni Di Noia
by
3.1k points
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