Verified Answer :

I believe that the answer is 111203.703704=t

3=\(0.03t^{3}\) + \(0.05^{2}\)
3=0.03\(t^{3} + 0.05^{2}\)
3=\(0.003t^{3}\)+ 0.0025
3-0.0025=\(0.03t^{3}\)
2.9975=\(0.03t^{3}\)
\(t^{3} = \frac{2.9975}{0.03}\)
t=4.64