Answer:
2/5
Step-by-step explanation:

Hence, simplest form of 34/85 is 2/5.
So the numerator of your fraction (the top number) is the amount that was cut. The denominator (the bottom number) is the total amount of rope. So, your fraction would be 2/12. You can still simplify that by dividing both the numerator and denominator by 2 and end up with 1/6. Does that make sense? If you need any more help, go ahead and message me :)
I think is 1863 m because if you use the formula for area
5,12,13
5X5=25
12X12=144
25+144=169
answer: square root 169=13
Are you able to expand everything first? from there you would be able to combine line terms. basically if you have 3x+2x it would combine to 5x because they have x in them.