UC知道英文数学问题~在线等~
来源：百度知道 编辑：UC知道 时间：2024/05/15 03:00:50
1.I have five squares and four triangles all of which have side lengths of 3 cm. I attempt to form a net for a polyhedron by taping the shapes together along their edges. If this can be done,into what shape will the net fold?
2.A triangle has side lengths of 8 cm, 5cm and 根号39. Is it right angled triangle.
32.happy numbers-add the squares of the digits of a whole number to produce a new number. if you repeat this process and end up with the number 1,you have found a happy number. for example:
23-->4+9=13-->1+9=10-->1+0=1
therefore 23 is ahappy number. find the next happy number after 28.
33.Grandma likes to cook her eggs for exactly seven minutes.however, the only timers she has are a three minute egg timer and a five minute egg timer. how does she use the two egg timers to measure exactly seven minutes?
不知道..能解就好~
2.A triangle has side lengths of 8 cm, 5cm and 根号39. Is it right angled triangle.
32.happy numbers-add the squares of the digits of a whole number to produce a new number. if you repeat this process and end up with the number 1,you have found a happy number. for example:
23-->4+9=13-->1+9=10-->1+0=1
therefore 23 is ahappy number. find the next happy number after 28.
33.Grandma likes to cook her eggs for exactly seven minutes.however, the only timers she has are a three minute egg timer and a five minute egg timer. how does she use the two egg timers to measure exactly seven minutes?
不知道..能解就好~
33.能先五分,走到四分调三分吗?
2.对,根号39约等于6.24499799839
三角形两条短边应长于最长边,符合
稍等
32.number-add the squre中间是减号还是什么？
32.规律是什么？
1.答案:一个九宫图，去掉四个角上的四个正方形(如同一个十字），在这个“十字”的四个角上各添一个三角形，拼出的立体图形如同一个尖顶房子，下面一个正方体，上面一个四棱锥。
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