Just wondering if I helped my nephew and did this the correct way please help ​

I think its right, but I’m not that smart so if i were you i would wait for another to answer.

but i m pretty sure its right, I checked it three times.

Step-by-step explanation:

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.