V = pi r^2 h
v = 3.14 * 5^2 * 15
v = 3.14 * 25 * 15
v = 1177.5 in^3
If there are ten black pens, eight blue pens, and twenty pens in total, then there are 2 red pens. This means that the ratio of red to black is 2:10=1:5. Hope this helps!
Answer:
Can you write it again... I dont underestand sorry
Answer:
20x= 2
Step-by-step explanation:
2( 10x = 1)
2x10x=20x
2x1=2
20x=2
if im not mistaken