Do values of these triangles form right triangles or not using Pythagorean theorem

Yes

Yes

No

Step-by-step explanation:

9-12-15 is just a dilation of a 3-4-5, which is right.

6-8-10 is also a dilation of 3-4-5.

However, 2-4-6 is not a triangle. In fact, it's just a line segment, because 2+4=6

if you explain the the question more correctly i might be able to answer this better

step-by-step explanation:

pi x^2

step-by-step explanation:

pi times x squared