, we first determine r=x2+y2=122+52=13
√122+52 is incorrect. 12 squared is 144, and 5 squared is 25. Add them, and the answer is √169, which is 13
, we first determine r=x2+y2=122+52=13
√122+52 is incorrect. 12 squared is 144, and 5 squared is 25. Add them, and the answer is √169, which is 13