Parameter value '33.42922222' is out of range

I have an attribute of a table named ad Latitude, i have set its data type as decimal(9,8) null but when i try to insert the value 33.42922222 it gives me the error

Parameter value '33.42922222' is out of range.

when i try to directly enter the value in the database table it gives the Arithmetic overflow error

i have tried to change the datatype to numeric(9,8) null but to no avail

please help me find out the problem ...