solving simple coupled equations

can someone help me solving the equations

D^2* L =51.8/(1087*25)

L / D = 1.178

Answer 1

[Star Strider]

Symbolic Math Toolbox:

syms L D 
Eq1 = D^2* L == 51.8/(1087*25);
Eq2 = L/D == 1.178;
[Ls,Ds] = solve(Eq1,Eq2,[L,D]);
Lv = vpa(Ls)
Dv = vpa(Ds)

producing:

Lv =
 - 0.06914916395087665 + 0.1197698652638286i
 - 0.06914916395087665 - 0.1197698652638286i
                          0.1382983279017533
 
Dv =
 - 0.0587004787358885 + 0.1016722115991754i
 - 0.0587004787358885 - 0.1016722115991754i
                          0.117400957471777

There are other ways to solve them as well.