c# - truncated decimal point number inserted incorrect into mssql -

c# - truncated decimal point number inserted incorrect into mssql -

i have width , height in centimeter , calculate area :

var res = ((width * height) / 10000);

(divided 10000 create meter)

the problem :

i want insert result microsoft sqlserver table , truncate point part of number 2 digit :

res = math.truncate(res * 100) / 100;

then insert table,if input 2 number 216 , 152 result 3.28, till here ok but,when check result in database see : 3.280000002 truncate in store procedure :

round(area,2)

but did not solve problem.

c# sql-server winforms