Math
posted by Gaurav .
09+36=75
05+04=23
08+01=63
06+16=32
09+09=78
03+09=6
03+81=??
Can u solve & share the logic behind this??

take the square of the 1st number & the square root of 2nd number
09+36=75 (816=75)
05+04=23 (252=23)
08+01=63 (641=63)
06+16=32 (364)
09+09=78 (813)
03+09=6 (93=6)
03+81=?? (99=0)