Collecting things is an interesting hobby. People collect a lot of things such as stamps, milk bottle labels, comic books as well as car toys. Someone who has much money can collect sport cars. Amy is a skillful and interesting woman. She is twenty years old. She is working as a hairdresser. Amy has a strange hobby that is collecting candy shells. Her friends and relatives always give her shells after eating candy. She has a big collection of
candy shell now. She thinks she will make a special dress. If she has more shells, she will make other things such as wallets or shoes. This makes her happy. Collecting things is a waste of time and money. However, people still consider it as a good hobby.
1. What do people collect?
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2. How old is Amy?
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3. What does she do?
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4. What is her hobby?
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5. Who give her candy shells?
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{"1. What do people collect?": ["People collect a lot of things such as stamps, milk bottle labels, comic books, and car toys.", "Some people who have much money can collect sport cars."]}{"2. How old is Amy?": ["Amy is twenty years old."]}{"3. What does she do?": ["She is working as a hairdresser."]}{"4. What is her hobby?": ["Her hobby is collecting candy shells."]}{"5. Who gives her candy shells?": ["Her friends and relatives always give her shells after eating candy."]}
Để giải bài toán này, ta có thể áp dụng định lý Pythagoras trong tam giác vuông. Gọi hai cạnh góc vuông của tam giác vuông là 5x và 6x (với x là một số thực dương), ta có:(5x)^2 + (6x)^2 = (122)^225x^2 + 36x^2 = 1488461x^2 = 14884x^2 = 14884/61x^2 ≈ ***x ≈ √***x ≈ 15.60Vậy độ dài hai cạnh góc vuông lên cạnh huyền của tam giác vuông là 5x ≈ 5 * 15.60 ≈ 78 cm và 6x ≈ 6 * 15.60 ≈ 93.60 cm.