rvg
rvg
16-05-2017
Mathematics
contestada
please help me is for my geometry
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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