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The blast radius of a 250 gallon propane tank would be 100 yards
standard blast radius is around 3-8 feet
about 7.7 percent
35km
The fireball was roughly 1500 feet in diameter (750 feet in radius).Blast damage was found at 10000 yards (30000 feet) to some of the bunkers.The blast was heard hundreds of miles away.
square miles and radius have different units
150 yards
About 16 ft for effective use.
Arrow - 2012 Blast Radius 2-10 is rated/received certificates of: Netherlands:12 USA:TV-14
It has a blast radius of 160m to 250m. The bomb weighs 5 kg containing 1.2 kg of HE. The missile is 11.2 m long and has a diameter if 0.88m.
The hand grenade currently employed by most armies has a kill radius of 5 meters and danger radius of 15 meters.