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仍仂舒亟 仗礆仂亞仂仍仆仂亞仂 亠亞仂仍仆亳从舒

4 弌弌
. 亠亠仂仆
 亰仆舒亠仄
 仆仂于仆亠 仗仂仆亳
 舒从 仆舒亶亳 仗仍仂舒亟 仗礆仂亞仂仍仆仂亞仂
亠亞仂仍仆亳从舒
 亳仄亠
亠仂仄亠亳  仗舒于亳亠仍仆亳舒
于亠 仄仍亳亠仍仆 亳亰从舒仆亳亶.
.. 仂仄仂仆仂仂于
舒亰仂于亳 仍亳仆ム 亞亠仂仄亠亳亠从 亳亞
亠亳仄亠
仂 亠仄亠 仂舒于 亰舒亟舒 亳 亠亳 亠亠
a=21 仄
b=2 仂 a
7

b

a
P-?

P=(a+b)2
仍仂舒亟
仂 亠仄亠 仂舒于 亰舒亟舒 亳 亠亳 亠亠
a=14 仄
a 仂舒于仍磳 2 仂 b
3

a

S=axb
S-?
b
礆仂亞仂仍仆亶 亠亞仂仍仆亳从

从舒亠

亶 亞仂仍

从舒亠
礆仂亶 亞仂仍

亶 亞仂仍
仍仂舒亟
仗礆仂亞仂仍仆仂亞仂 亠亞仂仍仆亳从舒

从舒亠

S=(a x b) : 2

从舒亠
仍仂舒亟
仗礆仂亞仂仍仆仂亞仂 亠亞仂仍仆亳从舒

从舒亠

S=(a x b) : 2

从舒亠
亳舒 仗亳仗仍仍亳 仆舒 仆亠仂弍亳舒亠仄亶 仂仂于, 从仂仂亶
亳仄亠亠 仂仄 仗礆仂亞仂仍仆仂亞仂 亠亞仂仍仆亳从舒  从舒亠舒仄亳
1200仄 亳 650仄. 舒从 仗仍仂舒亟 仗亠亠从仂仗舒ム 仗亳舒 于
仗仂亳从舒 仂从仂于亳 从舒仗亳舒仆舒 个仍亳仆舒, 亠仍亳 亳亰于亠仆仂, 仂
仂从仂于亳舒 仗舒仆 仆舒 亟亞仂仄 仂仂于亠?
S=(axb):2
(1200x650):2=390000(仄2)
仗 仆亠亟舒舒!
弌仂仍从仂 仗亠亠从仂仗舒仍亳!
亳亟亠 仗仍 仆舒 亟亞仂亶 仂仂于!!!!
舒弍仂舒 于 仗舒舒.
1.弍于亠亟亳 从舒亠 从舒仆仄 从舒舒仆亟舒仂仄, 舒 亞亳仗仂亠仆亰 - 亳仆亳仄.
2. 舒亶亳 仗仍仂舒亟亳 仗礆仂亞仂仍仆亳从仂于
8仄

6仄

5仄

3仄

舒) (36):2=9 (仄2)
弍) (56):2=15 (仄2)

于) (88):2=32 (仄2)

6仄

8仄
仂仍仂亟!
弌仗舒亳弍仂 亰舒 仂从!

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