B. 47 degrees
Explanation:
They already cut 43 degrees and they want to cut until a right angle is form which is 90 degrees. To find how much more they have to cut, do 90-43 which gives you 47.
That's answer is false it not true
Centimeters, probably, which (for small things) isn't accurate.
24 hours in a day for 4 days its 96 hours