严形讶 闲卧
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缆牙1򪓽- 镳噔桦 蝠弩泐朦磬 镳桤爨

-?
b-?
d-?
h-?
S 铖頎 16√3
S 犷隊 360
S 镱鉅 ?
- 耱铕铐 铖眍忄龛, b- 犷觐忸 疱狃, d牀 滂嚆铐嚯 犷觐忸 沭囗, h- 恹耦蜞 铖眍忄龛, S 铖- 镫铢噤 铖眍忄龛, S 犷- 镫铢噤 犷觐忸 镱忮瘐眍耱, S 镱- 镫铢噤 镱忮瘐眍耱. 袜殇栩 礤漕耱帼 屐屙螓 镳桤禧.
项祛汨蝈 镱驵塍轳蜞

爨蝈爨蜩赅 钺篦屙桢     #1   24 爨 2022 09:01   逾桎咫: 91 觌桢眚, 1120 耧弼栲腓耱钼   悟忮蜩螯
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S 镱= S 犷 + 2 S 铖.. 如 镫铢噤 铖眍忄龛 耠邃箦, 黩 耱铕铐 铖眍忄龛 疣忭 8! .. =8. S 犷 : 3= 120牀  镫铢噤 钿眍 犷觐忸 沭囗. 橡桤爨 镳噔桦, 珥圜栩 犷觐忸 疱狃 耦怙噤噱 潴泐 耱铕铐铋 犷觐忸 沭囗, .. 120:8=15. b = 15. 蔫嚆铐嚯 犷觐忸 沭囗 磬躅滂 镱 蝈铕屐 翔羿泐疣牀 d=17. 蔓耦蜞 铖眍忄龛牀 蝾驽 镱 蝈铕屐 翔羿泐疣. 朽忭铖蝾痤眄栝 蝠弩泐朦龛 耦 耱铕铐铋 8. 64-16=48. h=4√3

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琼 镫铢噤 铖眍忄龛 (疣忭铖蝾痤眄栝 蝠弩泐朦龛), 祛骓 磬轵 耱铕铐 铖眍忄龛 镱 纛痨箅 镫铢噤 疣忭铖蝾痤眄邈 蝠弩泐朦龛赅. S 犷 = 3ab. d h 祛泱 猁螯 磬殇屙 镱 蝈铕屐 翔羿泐疣 桤 耦铗忮蝰蜮簋 蝠弩泐朦龛觐 (皲咫囹 痂耋眍).

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a=8, b=15, d=17, h=4*3^(1/2), S镱=32*3^(1/2) +360

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亦 赅 S铖 镳噔桦铋 蝠弩泐朦眍 镳桤禧 = 3/√4⋅a^2, 蝾 a = 8.
S 犷 = 3ah ⇒ 360 = 3 * 8 * b ⇒ b = 15
h = 4*√3 (赅 恹耦蜞 疣忭铖蝾痤眄屐 蝠弩泐朦龛赍 铖眍忄龛屐 8),
d = (镱 蝈铕屐 翔羿泐疣) = sqrt(a^2 + b^2)= sqrt(64 + 225) = sqrt(289) = 17

S 镱 = 2 * S 铖 + S 犷 = 32√3 + 360

青溧轵 疋铋 忸镳铖 镱 爨蝈爨蜩赍
镳铘羼耔铐嚯囔

彦轺囫 铐豚轫 75 疱镥蜩蝾痤 镱 爨蝈爨蜩赍
项塍麒蝈 铗忮 镳铘 猁耱痤 徨耧豚蝽

酿筱桢 忸镳铖 磬  蝈祗:

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橡桤爨   3 铗忮蜞

耱铕铐 铖眍忄龛 镳噔桦铋 麇螓疱筱铍铋 镳桤禧 疣忭 ,邋 犷觐恹 疱狃 疣忭 2, 磬轵 镫铢噤 滂嚆铐嚯钽 皴麇龛
  09 铌 2014 14:07  
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项躅潢 篁觇   3 铗忮蜞

域赅 镳 躅潼徨 镥疱忄腓忄弪 犷牦 磬 犷, 牦痂鲟 礤. 项麇祗?
  07 眍 2012 22:52  
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绣豚 玎溧黧 , 眍 礤 筲屦囗 镳噔桦铖蜩. 项祛汨蝈   4 铗忮蜞

泥眍 镳噔桦 麇螓疱躞泐朦磬 镳桤爨 ABCDA1B1C1D1. AB=6. AA1=4*(3)^1/2. M 镳桧噤脲骅 AB. N 镳桧噤脲骅 A1D1. K 镳桧噤脲骅 C1D1. L  蝾麝 镥疱皴麇龛 (MNK) BC. ) 漕赅玎螯 黩 MNKL 赈噤疣. ) 磬轵 镫铢噤 皴麇龛 镫铖觐耱 (MNK)
AM=A1N=C1K=1
  08 囡 2016 22:19  
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镳噔桦铋 镳桤戾 缆牙1򪓽 犷觐忸 疱狃 疣忭 觐疱睃 桤 3   0 铗忮蝾

镳噔桦铋 镳桤戾 缆牙1򪓽犷觐忸 疱狃 疣忭 觐疱睃 桤 3, 疱狃 铖眍忄龛 4.蝾麝 D 皴疱滂磬 侣1.袜轵 钺 蜩沭囗龛赅 򤇷1袲
  27 爨 2015 15:32  
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项驵塍轳蜞 镱祛汨蝈!!! 羼腓 祛骓 皴泐漤...   45 铗忮蝾

泥磬 镳噔桦 蝠弩泐朦磬 镳桤爨 缆牙1򪓽. 务眍忄龛 疣忭 6. 缆1 钺疣. 筱铍 铖眍忄龛屐 30 沭噤篑钼. 袜轵: S犷., S., V, V铒桉. 鲨腓礓疣.
  03 爨 2012 22:15  
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