Answer:
A, B, C
Step-by-step explanation:
just put it into the formula a^2+b^2=c^2
a) 12^2+16^2
= 144+256
= 400 = 20^2
b) 4.5^2+6^2
= 20.25+36
= 56.25 = 7.5^2
c) 5^2+12^2
= 25+144
= 169 = 13^2
The next two dont match
