What is the product of (6.2*10^4) * (3.4*10^-2)? I got 2,108. am I right?

What is the volume of this square pyramid?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Is it greater than or less than7*3_9*2