球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的距离中,最大距离为（）

球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的距离中,最大距离为（）
球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的
球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的距离中,最大距离为（）

球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的球半径为R,A,B是球面上两点,且A,B的球面距离为(1/3)πR,则球心到过A,B所有平面的距离中,最大距离为（）
楼主,
设球心为O,球心到品面AB最大距离就是过球心作线段AB的垂线叫AB于H,求OH的长度
因为A,B的球面距离为(1/3)πR,所以有扇形面积公式得∠AOB=60°
等边三角形三边相等
所以AB=OA=OB=R
所以OH长度为二分之根号三

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How To Advertise Online Successfully
How To Advertise Online Successfully

If you have found that the majority of your customers are coming from online sources,...

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How To Advertise Online Successfully
How To Advertise Online Successfully

If you have found that the majority of your customers are coming from online sources,CHI Flat Iron, then you are going to want to focus the majority of your advertising to online sites. Remember that this can be tricky because if you don't have a big budget you might believe that advertising is too expensive. However, there are some great ways that you can advertise online without costing yourself too much money, and you should be able to do this very easily.
The first step to making sure that you are able to do online advertising is that you know exactly who you are looking at for your customer base. Sure ,ghd,they are coming from online sources. But who are they? What ages are they and what else defines them as people? You want to be sure that you are able to get as much out of it as possible and that you have the best chance to do your advertising in a way that can help you make sure that you are able to get as much out of it as you can.
So, you want to be sure that you know who you are looking for. Then you can begin to target them. Remember that the best way to do online advertising is to have your name and company website and have it linked at another site. This will allow people who are at that site to take a look at your site as well. This is something that you have to be sure of so that you know what you are doing. Therefore, after you have decided who your customers are, you want to figure out where they go. There are lots of different places that will help you figure out where different people go online, so you should be able to use these sources to figure out where your customers are going too. This is something that you can do very easily as well.
After you know where they are going,ghd, you can find ways to put your website up there. Buying advertising space is one thing and it might be that you have a little bit of money so that you can do this. If you are going to buy space, be sure that you do so on the pages that have the greatest amounts of hits. Otherwise,ghd IV Styler, you have to do your own advertising for free.
You can advertise your own site for free online in several ways. First of all,ghd, be sure that any lists of retailers that do what you do also includes yourself. You can put yourself in directories and make sure that people know you are there. You can also be sure that you have added your name and website to as many different lists as you can. There are lots of ways that you can do this, and it is something that you can do on your own.
Advertising online is something that might take awhile, but you can do it quite easily and you can do it on your own.

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