Approx. the length of a train box car. A bit less than 1/3 the size of a football field.. And last (but not least) exactly 1/2 dozen Dolly Partons.
30 ft. is a two story building.
Apparently 30 feet long is a 30 feet long. Just like to build a two-story building has the length of 30 feet long in height.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them