Round them up.

Female writers weren't very accepted then.

Environmental viscosity

Let's say I have another circle here.

McGee, David... Perimeter.

You come with me. McGee, take the perimeter.

So all we're interested in here is comparing the temperature of the beetle against the background.

Area and Perimeter

Each iceberg has its own individual personality.

For three hundred years they have farmed the surrounding land.

So this right here, this is just a formula for the perimeter of a rectangle.

Anyway, we're done.

So it's equal to 28 centimeters square or squared centimeters.

We'll secure the perimeter.

Clear the area.

But we're doing it with a lot less testosterone.

The pond was encircled with trees.

So let me draw a square here. My best attempt. So this is A, B, C, D. And we're going to tell ourselves that this right here is a square.

If AB is x, then BC is x, then DC is x, and AD is x. All of the sides are congruent. All of these segments are congruent.

No! Right and might are on our side.

Watch your spacing.

In an infinite expanse of nothingness...

So that's scenario one.

We have to figure out its length as well. So, how do we figure that out?

The lake is ten miles about.

Remember, a seamount turns into an island when it hits the surface. And what's the context of the Phoenix Islands?

I photographed this thing last week in Dorset.

Bar the gate. And set a watch on the surround.

Always mind your surroundings.

Fringing on your territory?

This tree measures three meters around.

No sign of the enemy in our surroundings.

And of course, the major thing

They are labor intensive and inefficient.

Well, it's going to be w w 2w 2w let me write this down

Have you locked down the area?

Primary exit blocked. Secondary, move.

But I had to make a little barrier, going around it, out of cellophane, to stop it moving.

And ask all of our colleagues in the rest of the world, colleague universities, to help us to find and work and act like a hub to crowdsource all these AEDs all around the world, that whenever you're on holiday and somebody collapses, might it be your own relative or someone just in front of you, you can find this.

Tall pine trees make a ring around the lake.

The tree is four feet around.

The lake is five kilometers round.

The earth goes around the sun.

There was nobody about.

Let's say this is r meters. Give ourselves some units right over there