求S阴影部分和C阴影部分，六年级数学题，要过程，公式
\u5c0f\u5b66\u516d\u5e74\u7ea7\u7684\u6570\u5b66\u9898\uff0c\u6c42\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef=\uff08\u77e9\u5f62\u7684\u9762\u79ef-\u4e24\u4e2a\u5706\u7684\u9762\u79ef\uff09/2
=\uff088*4-2*3.14*2*2\uff09/2
=\uff0832-25.12\uff09/2
=6.88/2
=3.44\u5e73\u65b9\u5398\u7c73
\u597d\u719f\u6089\u7684\u9898\u76ee\uff0c\u597d\u6000\u604b\u5f53\u5e74
\u7edd\u5bf9\u4e0d\u5c11\u6761\u4ef6\uff0c\u8bb0\u5f97\u662f\u7528\u5272\u8865\u6cd5\uff0c\u5e2e\u4f60\u770b\u770b
\u9634\u5f71\u9762\u79ef\u662f\u5c0f\u6b63\u65b9\u5f62\u7684\u4e00\u534a\uff01
\u662f18
\u65b9\u6cd5\u5c31\u662f\u8bc1\u660e \u4e09\u89d2\u5f62ABD\u7684\u9762\u79ef\u548c\u68af\u5f62ABCE\u7684\u9762\u79ef\u76f8\u7b49 \u5f97\u5230\u9634\u5f71BCF\u7684\u9762\u79ef\u548c\u4e09\u89d2\u5f62FED\u7684\u9762\u79ef\u76f8\u7b49
=1/4圆面积-三角形面积
=1/4×4²×3.14-1/2 ×4²
=12.56-8
=4.56平方单位
3.14×4×4×1/4-4×4÷2=
绛旓細闃村奖闈㈢Н =1/4鍦嗛潰绉-涓夎褰㈤潰绉 =1/4脳4²脳3.14-1/2 脳4²=12.56-8 =4.56骞虫柟鍗曚綅
绛旓細1銆闃村奖闈㈢Н =姝ｆ柟褰㈤潰绉-4鍒嗕箣1鐨勫渾闈㈢Н =4脳4-4鍒嗕箣1脳3.14脳4脳4 =16-12.56 =3.44骞虫柟鍘樼背 2銆佹鏂瑰舰杈归暱=10脳2=20鍘樼背 闃村奖闈㈢Н =姝ｆ柟褰㈤潰绉-鍦嗛潰绉 =20脳20-3.14脳10脳10 =400-314 =86骞虫柟鍘樼背 ~涓鍒绘案杩523涓轰綘瑙ｇ瓟锛岀浣犲涔犺繘姝~~濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇峰強鏃剁偣鍑汇愰噰...
绛旓細鎵浠C闃锛濄寮B +AC+BC= 銆3.14*5+6+8=29.7 S闃锛濄S鍗婂渾锛峉涓夎褰紳 3.14*5*5/2- 6*8/2=15.25
绛旓細S=涓や釜鍗婂緞涓20鍘樼背鐨勬墖褰㈤潰绉箣鍜岋紙鍗冲崐鍦嗛潰绉級-姝ｆ柟褰㈤潰绉 =3.14脳20脳20梅2-20脳20=228骞虫柟鍘樼背 C=涓や釜鍗婂緞涓20鍘樼背鐨勬墖褰㈢殑寮ч暱涔嬪拰锛堝嵆鍦嗗懆闀跨殑涓鍗婏級=3.14脳20脳2梅2=62.8鍘樼背
绛旓細86锛坈m²锛夈愰暱鏂瑰舰鍑忓幓鍦嗙殑闈㈢Н寰楀埌闃村奖閮ㄥ垎鐨勯潰绉戝懆闀匡細锛8+2锛壝2=20锛坈m锛夈愰暱鏂瑰舰鐨勫懆闀裤2脳3.14=6.28锛坈m锛夈愬渾鐨勫懆闀裤20+6.28=26.28锛坈m锛夈愰暱鏂瑰舰鍛ㄩ暱鍔犱笂鍦嗗懆闀垮緱鍒伴槾褰遍儴鍒嗙殑鍛ㄩ暱銆戝笇鏈涜兘甯姪鍒颁綘锛岃阿璋備笉杩囪繕鏄笇鏈涢鐩彲浠ュ鍔ㄨ剳鑷繁鎬濊冪殑璇濅細鏈夋洿澶х殑杩涙鍝 ...
绛旓細瑙:闃村奖閮ㄥ垎闈㈢Н36骞虫柟鍘樼背,鍛ㄩ暱30.85鍘樼背銆傚垎鏋愶細濡傚浘锛岄槾褰遍儴鍒鍒掑垎涓哄尯鍩1鍜2锛屼袱鍧楀姞璧锋潵鍒氬ソ涓轰竴涓鏂瑰舰锛屽垯S闃锛6²锛36 (cm²)銆傞槾褰遍儴鍒嗙殑鍛ㄩ暱鐢变袱涓暱涓6cm鐨勭洿杈瑰拰涓や釜¼鍦嗗姬缁勬垚,鍒C闃锛6脳2+2脳¼脳(2蟺脳6)锛12+6蟺鈮30.85(cm)銆備綘鐨勭瓟妗堟槸姝ｇ‘鐨...
绛旓細涓妤肩殑姝ｇ‘.浣犵殑鍥剧敾閿欎簡,涓嶇敤鍑芥暟绠椾笉鍑烘潵鐨.瑕佹槸涓嶆眰杩欎釜瑙掑氨绠鍗曚簡.姝ｆ柟褰㈠噺鍦嗗氨鍙互浜
绛旓細瑕佹眰BC鐨勯暱锛屽疄闄呰姹傜殑鏄笁瑙掑舰ABC鐨勯潰绉S锛圓BC锛夛紳鍗婂渾鐨勯潰绉噺鍘闃村奖涓鐨勯潰绉啀鍔犱笂闃村奖浜岀殑闈㈢Н 锛濆崐鍦嗛潰绉-锛堥槾褰变竴鍑忓幓闃村奖浜 锛夋妸鏁板瓧浠ｅ叆锛岃绠楀緱鍒 锛628-108锛520锛堝钩鏂瑰帢绫筹級鍐嶅埄鐢ㄤ笁瑙掑舰闈㈢Н鍏紡锛屽凡鐭ラ潰绉笌搴曪紝姹傞珮銆傦紙520*2锛/40=26锛堝帢绫筹級妤间笂鐨勭瓟妗堝瓨鍦ㄤ袱澶勯敊璇細1銆佸崐鍦嗛潰绉...
绛旓細6.S鍗婂渾=S闃村奖+S鈻 S涓夎褰=S鍗婂渾-S闃村奖=0.5*锛6*6*3.14锛-26.52=30骞虫柟鍘樼背 h=S/0.5/锛6*2锛=5鍘樼背 7.C鍦=2蟺r R=C/锛2蟺锛=2cm 鈭礢鍦嗭紳S鐭╁舰 涓旂煩褰㈢殑瑙掍负90掳 鈭碨闃村奖=锛1-0.25锛塖鍦=0.75*锛3.14*2*2锛=9.42cm²C闃村奖=0.25C鍦+C鐭╁舰-2R=...
绛旓細鍙充笂瑙闃村奖閮ㄥ垎闈㈢Н瑙ｇ瓟鎬濊矾锛S鍙充笂闃村奖=S鈻矨BC-S绾㈣壊鍧=S鈻矨BC-锛圫鎵囧舰OBC-S鈻砄BC锛夎В绛旇繃绋嬶細绠鍗曡绠楀緱AC=鈭5锛孊C=2鈭5.锛堚垹ACB鏄洿瑙掞級tan伪=鈭5/锛2鈭5锛=0.5锛屛憋紳arctan0.5 S鎵囧舰OBC=蟺脳5²脳锛2伪/2蟺锛=25伪 S鈻砄BC=2鈭5脳2鈭5梅2=10 S鈻矨BC=鈭5脳2鈭5梅...
