me kan yuze kalkulater...sqrt(13)=3.60551275463989
+3 make it 6.6055...
that ^4=1,903.8655367224935
[3+sqrt(13)]^2 =24+6*sqrt(13)
square agin & yu gt 576+468 +12*sqrt(13)....1044+12*sqrt(13)
12*3.6055127...=43.26661530556787
add 1044 & yu get 1,087.266615305568
me trust kalkulater