1.a2 + b2 + c2.
Means leg (a2) + leg (b2) = the hypotenuse
12 cm side is A and the 5 cm is B.
We need to find C.
Now you have to find the square root.
Answer - 13 cm2
To find if it is right triangle it must apply a2+b2=c2.
8cm - a
6cm - b
11cm - c
Square root 100.
No it is not a right triangle.