So this distance up here is 45vb.

Using this pointer, made out of reflective markers,

So it would be that distance plus that distance plus that distance plus that distance.

So it would be the distance around.

These two focal lengths are symmetric.

Shots at close range.

So that's 15 fewer km.. And so the number of km that Beth ran would be this distance right over here.

light blue distance?

Well, we know the minor radius is a, so this length right here is also a.

That's this distance right there.

If it's in meters per minute, then this is the distance in meters.

So if this distance is the same as this distance, then the magenta distance minus this blue distance is going to be equal to this green distance.

How far is it from here to the city?

So how many meters?

What is the distance?

So a circle is a special case of this, because in a circle's case, the furthest we get from the origin is the same distance as the closest we get, or, in other words, we are always the exact same distance away from the origin.

Distance of the subject from the lens

They're going to pass each other there.

That's just this distance right here.

So we can make a very similar argument that we made in the ellipse situation.

Point blank range.

That is just zero, that is just right there.

Test whether a given point have the same distance from a given point and from another given point

line right there.

The square root of that.

And the problem tells us that it's 100 meters long.

The length of the arrow is the absolute value of this.

By definition, a circle is all of the points that are equal distant from the center point.

This distance right here is 3, this distance right here is 3, this distance right here is 2, this distance right here is 2.

Probably the distance.

So if you multiply 30 times here and times thirty, this is the distance.

We could have said something like this distance, but this distance wouldn't be the shortest distance between this point and this line.

Kimble's been spotted over in Acorn Falls.

Well, 36 15.. 6 5 is 1, 30 10 is 20.. So it's going to be 21

How far is it from here?

Let's do a couple more.

So this is going to take her another 20 minutes.

Same thing, that's this line.

This is what delta x is right now.

500 feet with a lens.

And what is the squared distance from 0 to our mean?

Now, the next most interesting thing that you might be wondering about a circle is how far is it around the circle?

There will probably be this point right here because the distance from there to there is this name as the distance from if you just drop a line straight down.

Let's just put in 10 in for x.

You're looking at Camp Two in a place called J2, not K2, but J2.