In the animation the pen is a rasterized circle of radius 12, but for calculations assuming it’s a square makes sense. FWIW I have no idea what the answer is to

In the animation the pen is a rasterized circle of radius 12, but for calculations assuming it’s a square makes sense. FWIW I have no idea what the answer is to the question! I imagine making as many simplifying assumptions as possible and generalizing from there will help