Answer:
Hazel will have knitted 25 centimeters of the scarf
SOLUTION
Problem Statement
We are told Hazel knits 5 centimeters of scarf every night for 5 nights. We are required to find the length of the scarf Hazel will have knitted after 5 nights.
Solution
We are told Hazel makes 5 centimeters of scarf every night. Thus, for each night up till 5 nights, we just need to add the length of scarf Hazel has made.
Let us count for each night.
Night 1:
Hazel makes 5 centimeters of the scarf.
Night 2:
Hazel makes extra 5 centimeters, which means she has made:

Night 3:
Hazel makes extra 5 centimeters, which means she has made:

NIght 4:
Hazel makes extra 5 centimeters, which means she has made:

NIght 5:
Hazel makes extra 5 centimeters, which means she has made:

Final Answer
Thus, Hazel will have knitted 25 centimeters of the scarf
Answer:
If -pi/3, the answer would be -1.05. If positive pi, then it's 1.05.
The sum of 3 fifteens and 4 twos will be 45 +8 = 53
Area=1/2 times base times height
base=4
height=3
area=1/2 times 4 times 3
area=2 times 3
area=6 square units