The two square numbers that add up to 225 are 144+81 = 225
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
9 and 36
9 + 16 = 25
1 and 9
5300
The two square numbers that add up to 225 are 144+81 = 225
160
92
The answer is 340. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
Square numbers.
9 and 36
40
11664 and 36
9 + 25
16, 25