It’s increasing by 1,2 so keep going by 1,2 and see if u get to 20,13 if not it means it’s not on that line
Whenever you see the word "per" you can ALWAYS substitue in the word "divide". When you see "miles per gallon", change "per" into "divided by" to get miles divided by gallons. That is how you will solve the problem.
SO.....
300 miles ÷ 10 gallons = 30 miles per gallon
The answer to your question is 260
I think the surface area would be 148.31mm squared
See the attachment below
Thanks.