Thx from the website http://goodcalculators.com/ratio-calculator/
Answer:
10
Step-by-step explanation:
Try this option (see the attacthed file; answer is marked with red colour); note, that

answer: 2 m/h.
1+1+1 is 3. And you have 1/3+1/3+1/3=3/3=1. So you end up with 3+1=4. So yes
Answer:
T = 0.34r³
Step-by-step explanation:
Given that T is directly proportional to r³ then the equation relating them is
T = kr³ ← k is the constant of variation
To find k use the condition T = 21.76 when r = 4 , then
21.76 = k × 4³ = 64k ( divide both sides by 64 )
0.34 = k
T= 0.34r³ ← equation of variation