Open Middle®
Hint
Is there a formula that can help us solve this problem?
When it says, “the tank holds between 110 and 115 cubic feet of water,” what mathematical concept are they referring to?
Answer
r=1 and h = 36, r = 2 and h = 9, r = 3 and h = 4, r = 6 and h = 1
Source: Smarter Balanced Practice Test
Also, (1 , 36 )= (r , h )
Thanks Dan. I added your answer to the list.
Love this question!
I also like this question, but not as a standardized test item. These types of questions are great for classroom discussion. Their beauty is lost when the context is testing.
#1 r=3, h=3
#2 r=1, h=36
#3 r=2, h=9