When the air in a hot-air balloon is heated to 100 degrees Fahrenheit, each cubic foot (ft3) of air can lift about 7 grams of weight. Now that you know that air can lift weight, try answering the project questions.

1. To lift 1000 pounds, you must have ____ ft3 of air.

Question

When the air in a hot-air balloon is heated to 100 degrees Fahrenheit, each cubic foot (ft3) of air can lift about 7 grams of weight. Now that you know that air can lift weight, try answering the project questions.

1. To lift 1000 pounds, you must have ____ ft3 of air.

anonymous · Answer

1000/7

anonymous · Answer

Okay so that would be 142.9 which was wrong last time I did it...

anonymous · Answer

Or maybe it was wrong because I didn't round to the nearest cubic foot?

anonymous · Answer

Which it does say to do. Whoops!

anonymous · Answer

Do you think that was the problem or no?

anonymous · Answer

Yeah it was still wrong. Oh well.