Answer:
Ratio = 1 : 4
Step-by-step explanation:
Total marbles = 10
Given 1/5 is red, that is 1/5 of the total marbles are red

Therefore , 10 - 2 = 8 marbles are blue.
Ratio of red marbles to blue marbles

Answer:
Step-by-step explanation:
34 and m=7
I believe it is because with a net you simply find the area, and measuring 2D shapes is far easier than 3D shapes.
Hope this helped!
- Z