Third box is out. The fourth box is out.

And this one and this one right over here.

A city block, urban block or simply block is a central element of urban planning and urban design.

That one square by itself would be 1 of the entire square.

Union Square

(Square metres)

BOX 1

BOX 2

BOX 3

BOX 4

BOX 5

BOX 7

BOX 8

I complete the square.

This is clearly a square.

So let me prove the quadratic equation to you, by completing the square.

We're going to complete the square.

So he's completing the square.

That's one gigawatt in a square kilometer, which works out to 1,000 watts per square meter.

So that's the ratio of the perimeter of the first square to the perimeter of the second square.

Big box please?

That's what completing the square is all about.

That is what the height squared is.

That's how we're going to complete the square.

Once again, just a difference of squares.

But that's only twice as big as 1.25 watts per square meter.

And what's the area of the square?

So that's the area of the square.

And let's just complete the square here.

What was completing the square?

And let's say that this square has a perimeter. So square has a perimeter of 36.

What's completing the square?

So what is completing the square?

And that is completing the square.

And so why is it called completing the square?

That is completing the square.

Notice that he has not aligned those squares. So the smaller square

Total immediate requirement 10 671

So let's try to complete the square with it.

So the square is circumscribed about the circle.

Well what's the area of the square going to be?

The population density of the UK is 250 people per square kilometer.

They deliver about 5 watts per square meter of land area.

So that's nice.

OK, so there's my square.