Two squares of area D and J share a vertex while the circle passes through four other vertices. What is the area of the latter in terms of D and J?

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## Solution

The circle area is (D+J)π/2.

## Poem

The circle is full

Full of squares

Which hold each other together

Arcs and angles

That support the vaults

Of cathedrals

In flamboyant style

Soaring to the sky

Geometrical look

For an optical illusion

Mystical figures

Here we go

Trying gently

Squaring the circle