You are contracted to lay a cement slab for a square patio.
The cost of concrete for the slab is
45
s
2
t
\displaystyle \frac{{{45}{s}^{{2}}}}{{t}}
t
45
s
2
. If
s
=
8
,
t
=
6
\displaystyle {s}={8},\ {t}={6}
s
=
8
,
t
=
6
, find the cost.
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