Adjudicating Areas of Effect; Targets in Areas of Effect

Source: Dungeon Master’s Guide p. 249

Targets in Areas of Effect

AreaNumber of Targets
ConeSize ÷ 10 (round up)
Cube or squareSize ÷ 5 (round up)
CylinderRadius ÷ 5 (round up)
LineLength ÷ 30 (round up)
Sphere or circleRadius ÷ 5 (round up)
^targets-in-areas-of-effect