Please help, will mark brainliest

Answer: 10
Step-by-step explanation:
Question A:
The formula to find the hypotenuse is c²=a²+b²
So you would insert the numbers into the formula which would be c²=8²+6²
8²=64
6²=36
36+64=100
So c²=100
Then you want to find c on its own so you have to square root 100.
The square root of 100 is 10.
You have to use this method for the rest of the triangles.