ushi
ushi
04-08-2016
Mathematics
contestada
r(t)=3t
A(r)=pi r^2
find A[r(t)]
Respuesta :
dalendrk
dalendrk
04-08-2016
r(t) = 3t; a(r) = πr²
subtitute:
a[r(t)] = π(3t)² =
9πt²
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