Answer:1 and 2
Step-by-step explanation:
Given
Volume needed 
For first cylinder
For second cylinder
For Third cylinder
For fourth cylinder
So, cylinder 
and 
are appropriate as it is under 
One third of 24 because 3 is a whole number smaller than 4 so the answer would be 3/24 not 4/16.
2y+20=100
2y=80
y=40
The explanation for this would because because the two base angles of an isosceles triangle are equal so since the both equal to 40 degrees, in total would be 80 degrees.
Since the total degrees of a triangle is 180 and you know the base angles make up for 80 percent you subtract that from the total of the angle your trying to find, which is 2y+20.
