Help me out True or false questions

What kind of bond pays interest which is exempt from tax?

You have just applied, and have been approved for a $58,000 mortgage. the rate quoted to you by the lender is 6.1% for a 30 year fixed mortgage. determine how much of your third month’s payment goes towards the principal. $56.65 $56.93 $57.22 $57.51

Urgent? will give brainliest to the first correct answer what is the area of the figure?