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Tefy1235 Tefy1235
  • 06-05-2016
  • Mathematics
Answered

what is the surface area of a sphere that has a radius of 5cm? use 3.14

Verified Answer :

Anonymous Anonymous
  • 06-05-2016

The answer is 314cm².
The formula for the surface area of a sphere is: A=4πr².
A=4×3.14×5²
First solve for exponents.
A=4×3.14×25
Then multiply.
A=314cm²

Answer Link
apologiabiology
apologiabiology apologiabiology
  • 06-05-2016

surface area of a sphere is roughly 4 times the area of a circle with same readius
aka
SA=4pir^2
pi=3.14 for this problem
r=5

SA=43.145^2
SA=43.1425
SA=100*3.14
SA=314

answer is 314 cm^2

Answer Link

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