It means I can take two identical squares, put them in light and dark surrounds, and the one on the dark surround looks lighter than on the light surround.

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

Round them up.

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

How do we inspire everyone around us?

Environmental viscosity

Let's say I have another circle here.

Each iceberg has its own individual personality.

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

And we want to know, what is the perimeter of ABCD? So let me write it down. The perimeter of rectangle ABCD is just going to be equal to the sum of the lengths of the sides.

Let's do a couple more of these.

McGee, David... Perimeter.

You come with me. McGee, take the perimeter.

This tree measures three meters around.

Be kind to those around you.

The pond was encircled with trees.

Whereas on the right, the two tiles look nearly the same.

The tree is four feet around.

The lake is five kilometers round.

The earth goes around the sun.

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

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.

Area and Perimeter

Tall pine trees make a ring around the lake.

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.

Mawhinney's Eyes

This is also going to be 2w over here.

It means greedy.

Fringing on your territory?

Computer Aided Design, Computer Aided Manufacturing.

And we know that AB is equal to 7, and we know that BC is equal to 5.

They are labor intensive and inefficient.

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.

Anyway, we're done.

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

We'll secure the perimeter.

Clear the area.

And yet, look around us.

28 meters.

There is a fence about the house.

The planets revolve around the sun.

There is a fence around the house.