问题
填空题
一个圆柱的底面半径是2cm，将其沿平行于底面分割成两个圆柱体，其表面积会增加（ ） cm2。
答案
25.12
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一个圆柱的底面半径是2cm，将其沿平行于底面分割成两个圆柱体，其表面积会增加（ ） cm2。
25.12
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| Do you want to look slim and thin? Then come to read the "golden rules!" 1. Eat 1 . That means not to have a quick dinner. The key strategy (策略) is to chew (咀嚼) each mouthful 40 times; 2. Eat food 2 distractions (分散注意力的事): no television, no 3 the paper, no nervous conversations; 3. Stop 4 when you feel comfortably full. If you are chewing properly, you will simply not be able to eat huge meals; 4. There should be an interval (间歇) of four to five hours 5 two meals-too many snacks make the digestion (消化) 6 ; 5. You should remember to 7 breakfast and lunch as your largest meals; 6. Don't eat too 8 in the evening. For the best, your evening meal should 9 before 6 pm. It should be small and 10 only easily digested foods, no raw (生的) vegetables or fruit. | ||||
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