For each set of side lengths, classify the triangle based on wheather it is a right triangle.

For the side lengths to create a right triangle they need to satisfy Pythagorean Theorem, so  where  and .

We can just perform this check on all the sides.

1)  Not a right triangle
2)  Not a right triangle
3) Right triangle
4)  Right triangle
5)  Not a right triangle

There you go :P

Idon’t feel like doing the math but you need to do 2.24 divided by 7