Difference between revisions of "Baka to Tesuto to Syokanju:Volume10 The Fifth Question"
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(Created page with "==The Fifth Question== Please answer the following question: Please calculate the area of the shaded region. Use π as the circular constant. Himeji Mizuki answer: Assumin...") |
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==The Fifth Question== |
==The Fifth Question== |
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| − | Please answer the following question: |
+ | '''Please answer the following question:''' |
Please calculate the area of the shaded region. Use π as the circular constant. |
Please calculate the area of the shaded region. Use π as the circular constant. |
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| + | [[Image:BTS_pi.jpg|200px]] |
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| − | Himeji Mizuki answer: |
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| + | |||
| + | '''Himeji Mizuki answer:''' |
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Assuming that the radius of the small circle is r, and the circumference as ℓ. |
Assuming that the radius of the small circle is r, and the circumference as ℓ. |
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| − | ℓ = |
+ | ℓ = 2πr |
The question asks for the area between radius 1 and 3, so we’ll call it ‘S’. |
The question asks for the area between radius 1 and 3, so we’ll call it ‘S’. |
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| + | [[Image: BTS Integrate.jpg|200px]] |
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| − | S= <math> \int_1^3 2 π r \;dr </math> |
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| + | |||
| + | Therefore, the answer is 8π. |
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| + | |||
| + | '''Teacher's Comment:''' |
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| + | |||
| + | Well answered. This is a standard question for area. |
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| + | |||
| + | '''Yoshii Akihisa's Answer:''' |
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| + | |||
| + | Iπ<ref>Supposed to be pronounced as '''e'''π. Sounds like ippai, which means many</ref> |
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| + | |||
| + | '''Teacher's Comment:''' |
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| + | |||
| + | It's been a while since I felt my veins popping. |
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| + | |||
| + | '''Tsuchiya Kouta's Answer:''' |
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| + | |||
| + | Oπ <ref>Oπ sounds like oppai, which means breasts</ref> |
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| + | |||
| + | '''Teacher's Comment:''' |
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| + | |||
| + | Come over to the counselling room. I will like to hear your explanation. |
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| + | |||
| + | ===Notes=== |
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| + | <references/> |
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| + | |||
| + | {{BakaTest Nav|prev=Baka to Tesuto to Syokanju:Volume10 The Fourth Question|next=Baka to Tesuto to Syokanju:Volume10 The Sixth Question}} |
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| + | </noinclude> |
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| + | |||
| + | |||
| + | '''Teacher's Comment:''' |
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Revision as of 15:14, 3 November 2012
The Fifth Question
Please answer the following question:
Please calculate the area of the shaded region. Use π as the circular constant.
Himeji Mizuki answer:
Assuming that the radius of the small circle is r, and the circumference as ℓ.
ℓ = 2πr
The question asks for the area between radius 1 and 3, so we’ll call it ‘S’.
Therefore, the answer is 8π.
Teacher's Comment:
Well answered. This is a standard question for area.
Yoshii Akihisa's Answer:
Iπ[1]
Teacher's Comment:
It's been a while since I felt my veins popping.
Tsuchiya Kouta's Answer:
Oπ [2]
Teacher's Comment:
Come over to the counselling room. I will like to hear your explanation.
