courtj17
courtj17 courtj17
  • 15-07-2016
  • Mathematics
contestada

What is the surface area of a sphere with a radius of 20 m?

1,600π m2
800π m2
400π m2
200π m2

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 15-07-2016
SA=4pir^2
r=20m
SA=4pi20^2
SA=4pi400
SA=1600pi m^2
Answer Link
Аноним Аноним
  • 15-07-2016
the formula of surface area of sphere= 4pi*r^2
radius=20 m
S.A=4*pi*20^2
S.A=4*pi*400
S.A=1600 pi m2
so the answer is a 1600 pi m2
Answer Link

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