Hoi!
The basic metric unit of capacity is a liter. :)
Answer:

Step-by-step explanation:
I do not know if this is completely correct
Answer:
V=2(1+2)a2h
Step-by-step explanation:
Answer:
6.7% of children who finished the race in under 45 seconds.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 75 seconds
Standard Deviation, σ = 20 seconds
We are given that the distribution of time of completion is a bell shaped distribution that is a normal distribution.
Formula:
P(finished the race in under 45 seconds.)
P(x < 45)
Calculation the value from standard normal z table, we have,

6.7% of children who finished the race in under 45 seconds.
I hope this is right i think the answer is 40