b边
ù߶˵ѧ֪ʶʲô?
ͻȻʶƤҲһƤֵģbcƤĻν֮ҲӦaƤĻν棬ȥ֮͵ʽȻֱûȥ֤ʱѧѾҽˣԺԲ˵óʽSb+Sc=Sa.нԲΣֱ뾶abc,\pi a^2=\pi b^2+\pi c^2
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ñҪһĵġȨͼƬȴһ㣬Ϊ辡ʵҿľǸʾ;òҴôд֤...
A.Ѿ(ch)B.(pn)C.(p)D.(q)...
C
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ҵͷƣϷ辣ͷƤɧô... ãȱijЩԪػӪҲǻᷴӦͷġ 飺 עһĵƽʱҪѡʺϵ...
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ȻֵĶѾ仯,Ŵ黹?Ҫѧ...
ͨ뷢ûѶȵģͨУ bpmf ĸ o ƴʱ o ǰ u ĸ c...ƽǰȰͰ̰^農ҹ¼μѼҼ؆䊯Ħſɼɳɯɴɰ...
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һխλʳܽӴ375pxǰ500pxڶխλˮƽ֧ܿǰ625pxǰ750pxխΪʳͨʳѿ״...