rvg
rvg rvg
  • 16-05-2017
  • Mathematics
contestada

please help me is for my geometry

please help me is for my geometry class=

Respuesta :

jvi jvi
  • 16-05-2017
the formula for surface area is SA=4pi(radius)^2
This means that 4SA=4pi(2r)^2
because 2^2=4 
so multiply the first ball's surface area by 4 
the answer is c
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