Question

If a circle has a center at the point (3, 4) and goes through the point (6, 8), what is the radius?

Answer 1

this is similar to the other question you posted. use the same technique

Answer 2

Very typical problem. The circle goes through a point that is 3 to the right and 4 upward. Without any calculations, it is evident that the radius is 5. This is a classic 3:4:5 pythagorian triangle.

Answer 3

it might be evident to you but not every one

Answer 4

oh okay thanks