jdf16 jdf16
  • 19-04-2017
  • Mathematics
contestada

Find the surface S of the balloon as a function of the time t.

Find the surface S of the balloon as a function of the time t class=

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jdoe0001 jdoe0001
  • 19-04-2017
seems to be just a matter of  S( r(t) )

[tex]\bf \textit{surface area of a sphere}\\\\ S=4\pi r^2\qquad \begin{cases} r=radius\\ --------\\ \boxed{r(t)}=\frac{3}{8}t^4 \end{cases}\implies S(t)=4\pi \left( \boxed{\frac{3}{8}t^4} \right)^2[/tex]
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