The spread of oil leaking in the ocean is the form of a circle. If the radius of the oil spread after
t
\displaystyle {t}
t
hours is
r
(
t
)
=
170
t
\displaystyle {r}{\left({t}\right)}={170}\sqrt{{{t}}}
r
(
t
)
=
170
t
, find the area of the oil spread in terms of time
t
\displaystyle {t}
t
.
A
(
t
)
=
\displaystyle {A}{\left({t}\right)}=
A
(
t
)
=
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