word – A couple of trick questions about a hole and some letters

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A couple of trick questions:

Warmup puzzle:

How much dirt is in a hole measuring 2 meters by 3 meters by 5 meters?

Warmup solution:

None, it’s a hole!

Main puzzle:

In the following line of letters cross out six letters so that the remaining letters, without altering their sequence, will spell a familiar English word:

B S A I N X L E A T N T E A R S

There are at least two different solutions. For your answer to be upvoted or accepted by me, you don’t necessarily need to give more than one solution.

Attribution:

Warmup puzzle: My father gave me this puzzle many years ago.

Main puzzle: The book, ”THE UNEXPECTED HANGING AND OTHER MATHEMATICAL DIVERSIONS” by Martin Gardner.