Question 857501
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Hi,
Let k represent the constant of proportionality
 P = kSV^2
18= k9*225
18/2025 = k
 P/kS = V^2
{{{32/(18/225)81}}} = V^2
{{{32*225/(18*81) =16*225/(9*81) }}} = V^2
V ={{{ sqrt(16*225/(9*81))}}} = 60/27 = 20/9