C#, 172 bytes (Cracked by SLuck49)

 (((((())))))***,,,,......1225;;;;;;<====>CFLMMMMMPPPRSSSSSWaaaaaaabbbbcccddddddeeeeeeeeeeegghiiiiiiiillllllmmnnnnnnnooooooooqqqqrrrssssssssstttttttttuuuuuuuvvwyy{{}} 

This code is a full program.

There are seven space characters at the start.

The input is read form STDIN and printed to STDOUT. The result is in double, no rounding done.

Original Code ungolfed:

using System; using S = System.Console; class P { static void Main() { var t = S.ReadLine(); double q = int.Parse(t); Func<double, double, double> M = Math.Pow; S.Write(M(q, 2 * .25) * M(q * q, 1)); } }