Circumference

So what is the circumference?

It's 27 kilometers in circumference.

Times the circumference of the Earth!

What is the circumference of the circle?

So what's the circumference of this ring?

The ratio of the circumference to the diameter.

And I were to tell you that its circumference is equal to 10 meters that's the circumference of the circle.

The circumference of this circle right over here which is the same thing as the circumference of that circle over there.

We call that word the circumference of the circle.

Circumference is equal to 2 pi times the radius.

It's 109 the circumference of the Earth 109 40 hours that's what it would take you to do a circumference of the Earth.

And its circumference, we have to be carefull here, they're giving us interesting... so circumference ... the circumference is 36 pi, then they tell us that contained in that circle is a smaller circle with area 16 pi.

Is it possible to determine the diameter from the circumference?

Maybe the ratio of the circumference of the diameter's 3.

So maybe the circumference is always three times the diameter.

It'll be the circumference of this ring times it's height.

Tom's hand. Tom's hand. Tom's hand.

How do you derive the length of the circumference? I've forgotten.

The circumference is equal to 2 times pi times the radius.

So if we know the radius of it, we know the circumference.

They went hand in hand.

Let's join hand in hand.

A hand... a blue hand.

God is an infinite sphere whose center is everywhere and circumference is nowhere.

So the circumference over here is going to be 2 pi r meters

The circumference of the circle, so when you measure around... gt gt Narrator

(the Earth) the Sun has, the Sun is 109 circumference of the Earth!

Do you walk hand in hand?

Put your hand in my hand

And once again, the ratio of the circumference of the diameter was roughly 3.

Maybe the ratio of the circumference to the diameters always fixed for any circle.

You can go to Google and type what is the circumference of the earth?

So just to give a sense of scale here, the earth's circumference, if you were to go around the planet, the earth's circumference, just like that, is about 40 000km 40 000km...

Oh, my hand. My hand, I can't move my hand. Oh, god.

She climbed a rope hand over hand.

They completed the picture hand in hand.

The couple is walking hand in hand.

I worked hand in hand with him.

My hand is similar to Mom's hand.

Give me your hand. Hold my hand.

If you know the circumference of a circle, and you have two points on it, all you need to know is the distance between those two points, and you can extrapolate the circumference.

Free Hand

Pointing Hand

Open hand