Worth 12 points and a you plus brainliest answer. can you guys with 7,8,9,10,and 11.can you guys also show me the work

The first one is 247.52 or 248cm. I used a percentage equation
the second one is 64 percent. I also used an equation
the third one is 0.072 or 0.07. I used equations
the fourth one is 72. I used logic
the last one is 21%. I added the two percents and subtracted the result from 100
Hope this helps :)

21/2 or 5/2