若P点位於正三角形ABC的内部,且P点到三角形三边的距离分别为 根号3,根号12,根号27,则三角

天目山幽深奇丽,无法用语言来形容.从位于天目山的山脚的双清庄到山顶,路程大约有二十余里.一般来说,位置偏僻的山大多荒无人烟,陡峭的山很少有盘旋迂回的山路；苍朴的山,很少有光彩艳丽的景色,磅礴的山很少有精巧雅致的趣味；以至于山高的话,就缺少流水潺潺,岩石陡峭的话,就缺少茂盛的树木；这些都是山的缺点.
天目山到处都是丘壑峡谷,瀑布水流潺潺,如同很多白色的丝绸（倾泻而下）,这是一绝.
山石的颜色深沉润泽,山石的棱角巧妙精致,山路盘旋迂回,悬崖陡峭耸立,这是第二绝.
虽然山谷偏僻幽深,山石耸立险峻,但寺庙都建筑的很好,这是第三绝.
我不喜欢听到打雷的声音,而天目山打雷的声音非常小,听到的好像婴儿的啼哭,这是第四绝.
我早早起来,看天目山的云彩晓,在悬崖峭壁,云彩洁白纯净的就像棉花,飘荡变幻如同浪花,整个世界都变成了一片五光十色的天地,仿佛到处都是美丽的琉璃,每座山峰的山顶突出于云海之上,如同散落的浮萍,这是第五绝.然而云彩的变化最不平常,它的样子非常奇特,如果不是久居山里的人,根本不能完全明白云彩的形态.
天目山高大的树木,树身粗的几乎有四十围,（“围”是计量圆周的单位,但具体是多少,说法不一.一说五寸为围,一说直径一尺为围,也有说两手拇指和食指合拢起来的长度为围,还有说两臂合抱的长度为围.）松树的形态如同伞盖一样,树高不过几尺,一棵树价值万余钱,这是第六绝.
天目山每年第一次采摘的茶叶芳香扑鼻,比龙井茶还要馥郁.竹笋的味道像绍兴破塘所产的竹笋,然而更加清淡悠长,这是第七绝也.
我说,长江的南面,学佛归隐的地方,没有比天目山更好的,于是就起了归隐山林的念头.
我们住了一天,第二天早晨起来去看云彩,巳时（上午九时至十一时）之后登上了天目山的顶峰,晚上住在高峰死关(天目山地名,以险峻出名).等到明天,从活埋庵找到上山的路,顺势下山.这几天天气十分晴朗,山寺的和尚认为这十分不平常,都下山互相集聚庆贺.山寺的和尚有四百多人,非常谦卑恭敬的遵守着礼节,争着请我们吃饭.等到要走的时候,和尚们说：“天目山荒凉偏僻,不足以招待你们这么重要的客人,真不知道怎么办”.我说：“我们和天目山也有些细微的缘份,僧人们不必过于谦虚,我们也不敢接受这种当面的赞誉”.于是众人开怀大笑,互道分别,离开了天目山.
我自己翻译的,应该问题不大.文章真长啊,晕死了.

Cologne Cathedral in Cologne,Germany,are located in a Catholic church.It is Germany's second and third in the world of high church,while the world's third-largest Gothic church.According to archaeological discoveries,the church at the site of the Roman Empire during the occupation period are ordinary residential areas.

Located in downtown, reykjavik cathedral, named Hal green Hallgrimskirkja church () to Iceland is a famous litterateur Hal green, named after the name of his literature, the enormous contribution in Iceland. The church in 1940 began in the late 1960s and foundation, the basic completion. Due to raise funds and donations to test the church, the church is almost spent more than half a century before completion. This church, novel design, structure, the main organ for more than 30 meters, can accommodate 1,200 people. 72 meters high tower on top, the elevator overlooking the capital.
The highest in western reykjavik 6 tremendous hot water and utilizing geothermal resources is the equipment from the numerous hot water, water extraction pipeline transport, water tanks, then supply to the downtown. Around Geothermal use to solve the pollution problem, make a smokefree reykjavik city ". In the six hot water, with a hemispherical big crystal ball, called "pearl tower", is one of the symbols of reykjavik. In the exhibition hall, hot spring model building, the revolving restaurant, visitors can be installed on the stage of looking through a telescope ornamental urban landscapes.

正方形EFGH面积最小时,就是三角形AEF,BFG,CGH,DEH面积最大的时候,当三角形为等腰三角形时,面积最大,即点E、F、G、H都为每条边的中点.

如果发生日全食,小部分的地区位于本影区,大部分的地区位于半影区；如果发生日环食,是小部分地区位于伪本影区,大部分地区位于半影区.
所以应该是写“本影区”

a=0.9;
Q=2e-5;
q=2e-5;
e0=8.85e-12;
F=1.25;
syms x
x=fzero(@(x)F-(1/4/pi/e0)*(q*Q*x)/(x^2+a^2)^1.5,0)
x =
0.2954

副词的位置可以随便变动的,因为它一般做状语
本句中你把句子变为His strength declined slowly也可以的,句意没什么改变,语法也是成立的.
再有就是你举得例子,hard有副词意义,也有形容词意义,work hard它就是做副词,hard work它就是形容词了.几乎吧!不过像hard这样的又是形容词又是副词的恐怕不行.

根据力矩平衡,有11*0.3+5*(L-0.3)+0.3*10*0.3/2=0.3*10*(L-0.3)/2
解之即可.

（31-25）/360*2*R*π≈667km

非倒装句：There is a long river winding across the highland,which is dry or semi-dry most of the time in the year.
倒装句：Winding across the highland is a long river,which is dry or semi-dry most of the time in the year.

设y^2=2px.
已知彗星距太阳1.6*10^8公里时,极径和抛物线轴成60度,
画图.
由抛物线性质.(1.6*10^8)*cos60度+p/2=1.6*10^8
所以p=1.6*10^8
y^2=(3.2*10^8)*x (1)
近日点和太阳的距离就是以焦点为圆心的圆与抛物线相切时圆的半径.
设圆为(x-0.8*10^8)^2+y^2=R^2 (2)
代入(1)式得(x-0.8*10^8)^2+(3.2*10^8)*x-R^2=0
然后令判别式=0即可
计算过程我就不写了