• ImpossibilityBox@lemmy.world
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    1 year ago

    The radius is the size of the sphere as measured from the center of the explosion.

    Maybe this analogy helps.

    You throw a ball at a wall and it bounces back towards you. If the ball reaches you or passes you then you die.

    You can throw a ball (the fireball) 150ft. At the end of your throw it hits a wall (center of explosion). The ball bounces back towards you 92.832ft (explosion radius/edge of explosion). The ball is now 57.168 ft away from you. Ball did not reach you therefore you live.