I am number squared

Question

I am a number squared i am greater than 45 but less than 70 my digits add to 13 what number am i?

Answer 1

Integer squares between 45 and 70 are 49 and 64 only. 4+9=13 so the number (integer) is 49.

7.9²=62.41 and 6+2+4+1=13 so 62.41 is a perfect square between 45 and 70. The question asks for a number, and numbers include mixed numbers (containing a decimal fraction).

So we have two numbers 49 and 62.41.