Round them up.

Environmental viscosity

Let's say I have another circle here.

I photographed this thing last week in Dorset.

Each iceberg has its own individual personality.

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

McGee, David... Perimeter.

You come with me. McGee, take the perimeter.

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

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

Area and Perimeter

And yet, look around us.

Other people. Everyone is interested in other people.

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.

No! Right and might are on our side.

No sign of the enemy in our surroundings.

Primary exit blocked. Secondary, move.

Anyway, we're done.

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

We'll secure the perimeter.

Clear the area.

Fringing on your territory?

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?

We have two identical tiles on the left, one in a dark surround, one in a light surround.

The pond was encircled with trees.

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.

Watch your spacing.

In an infinite expanse of nothingness...

There is a fence about the house.

There is a fence around the house.

Female writers weren't very accepted then.

Tall pine trees make a ring around the lake.

This tree measures three meters around.

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

And I'll do perimeter here on the left, and I'll do area here on the right. And you're probably pretty familiar with these concepts, but we'll revisit it just in case you are not.

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

Always mind your surroundings.

Close your eyes for a second, maybe, and try to imagine the complexity of the surrounding gas, with its billions and billions of molecules going and bumping into each other and exchanges of energy all around your body and around you billions and billions of molecules.

Indeed, they do look very strange. We're humans.

Yeah, this string is in language of the grammar.

The tree is four feet around.

The lake is five kilometers round.

The earth goes around the sun.

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