A child is trying to stack two uniform wooden blocks, 12 cm in length, so they will protrude as much as possible over the edge of a table, without tipping over, as shown in the figure. What is the maximum possible overhang distance d? 
Definitions:
Rectus Abdominis
A large muscle in the front of the abdomen that assists in regular breathing movements, maintains posture, and supports the spine.
Hernia
The protrusion of an organ or tissue through an abnormal opening in the wall of the cavity that normally contains it.
Fetal Heartbeat
A fetal heartbeat is the heart rate of a fetus, detectable by medical equipment, often as early as 5-6 weeks of pregnancy with ultrasound.
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