Answer:
It B and C
Step-by-step explanation:
the equation in Pythagorean theorem is a^2+b^2=c^2
so the answer for B would be 5^2*5^2=50,which is correct sine 5^2=25,and 25+25=50
The answer for C would be like 9^2+12^2=225
the square root of 225 is 15 which is correct.
but A is wrong because 5^2+6^2=31 is wrong.
