题目
题型:不详难度:来源:
答案
解析
试题分析:圆锥形的侧面积为底面周长乘以高,关键求高,根据勾股定理可得高
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010856-44281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010857-72619.png)
试题解析:根据勾股定理可得高
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010856-44281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010857-72619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010857-81092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010857-67250.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-46330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-66293.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-95161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-95103.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-31616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010852-74366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010847-57146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010847-72709.png)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010847-73634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010847-11808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010848-47305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010848-85568.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010842-35371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010843-27667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010843-27667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010843-74154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010843-64846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010843-24520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010836-44915.png)
(1)求⊙O的半径;
(2)求证:CE=BE.
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-35693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-68432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-60970.png)
(1)在平面直角坐标系
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-55403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-20741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-34954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010828-24310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-35426.png)
(2)半径为1的⊙C的圆心C与坐标原点O重合,直线
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-53026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-60903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-23330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-30179.png)
(3)在(2)的条件下,如果⊙C的圆心C从原点沿
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-60903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105010829-90654.png)
最新试题
- 1等腰三角形的周长是20cm,其中两边的差是8cm,求这个等腰三角形各边的长.
- 2下列各句衔接最恰当的一组是(3分)①随着黑人布鲁斯的兴起,并乘着一个新大国的新的全球影响力,歌曲重新回到了音乐的主流地位
- 3为探索工业废料的再利用,某化学兴趣小组设计了如下实验流程,用含有铝、铁和铜的合金废料制取氯化铝、绿矾晶体(FeSO4·7
- 4质量为m的小球.从桌面上竖直抛出,桌面离地高为h.小球能到达的离地面高度为H,若以桌面为零势能参考平面,不计空气阻力,则
- 5She _______ be here. I saw her come in. [ ]A. can B. may
- 6某农牧区由于长期滥垦草原、超载放牧,不仅没有改变经济落后的面貌,反而导致自然环境的严重破坏,草原承载力急剧下降。践行科学
- 7【题文】下列各句句式相同的一项是 (2分) A.师不必贤于弟子渺渺兮予怀B.师者,所以传道受业解惑也吾与子渔樵
- 8f"(x0)=2,求lim△x→0f(x0-△x)-f(x0)2△x的值______.
- 9已知3a+b+2c=3,且a+3b+2c=1,求2a+c之值______.
- 10设,(1)求;(2)求证是奇函数;(3)求证在上是增函数。
热门考点
- 1【题文】函数的最大值为
- 2如果|x|-2x2-x-6=0,则x等于( )A.±2B.-2C.2D.3
- 3下列同学的做法中,有利于班级集体发展的是[ ]A.小赵积极参加艺术节,为班级争光B.小钱参加卫生检查,有意压低别
- 4 —What"s this in English?—It"s ID card.A
- 5诗歌鉴赏。(4分)社日①王驾鹅湖山下稻粱肥,豚栅鸡栖半掩扉。桑柘影斜村社散,家家扶得醉人归。注:①社日:古时祭土地神、五
- 6从3时到6时,钟表的时针旋转角的度数是[ ]A.30°B.60°C.90°D.120°
- 7下面文字中有多处语病,找出三处,先写出有语病句子的序号,然后加以修改。(5分)①在空军航空兵某师飞行大队长孟凡升参加一次
- 8从一只装有5个红球的袋中随机摸出一球,若摸到白球的概率是P1,摸到红球的概率是P2,则( )A.P1=1,P2=1B.
- 9-9的相反数是[ ]A.B.C.-9D.9
- 10下图表反映了江南地区得到开发的哪一原因我国古代南北方人口比例表[ ]A.江南社会相对稳定B.江南自然条件优越C.