I do not have answer for this question looking for help.
Volume = 12 m³
V = lwh
V = 4(2)(1.5)
V = (8)(1.5)
V = 12 m³
X= pi/4 +k(pi)
(This may not be correct sorry)
450 g in 2:13
<u>Total proportion asked for </u>=2+13=15
<u>Now comparing g with ratio, or whatever </u>
450/15=30g
Therefore 1 in ratio depicts of 30g
So final answer = 
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More to know, daily bit of knowledge: The Binomial Theorem:

Answer:
The population of 75 hours from now would be 40,000.
Step-by-step explanation:
The reason for this is because your initial number is 10,000 and when 25 hours pass by, your population would be 20,000. Another 25 hours pass by, and then your population would be 40,000. If you multiply 25 by 3, you will notice 75 hours have just passed, so your answer would be 40,000.