Answer:
8 blocks because if you count it there are 8 boxes there
Answer:
The ratio 1:3:5 by doubling each number is the same as 2:6:10 and the big one 10 is 10/(2+6+10) = 10/18 of the total, so multiplying top and bottom by 10 gives 100/180, so the biggest angle is 100° since the sum of all angles must be 180°.
If you are asking for a common factor of 16 AND 20 the answer can be 80
Hope this helped :)