I need help on question 6. And 7.

Answer:
6-21
Step-by-step explanation:
6-
if you convert 15.9375 to a decimal it is 1.75
now if you convert 1.75 to inches it is 21 inches.
for 7 it seems that it got cut off but if you send me a pic i dont mind helpin you.
please make me as brainlest