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Tentukan luas daerah yang diarsir dari setiap gamb...

Tentukan luas daerah yang diarsir dari setiap gambar berikut.


Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell L subscript A B C end subscript end cell equals cell 1 half cross times A B cross times A C end cell row blank equals cell 1 half cross times 15 cross times 20 end cell row blank equals cell 150 space cm squared end cell row blank blank blank row cell C D end cell equals cell square root of A C squared minus A D squared end root end cell row blank equals cell square root of 20 squared minus 12 squared end root end cell row blank equals cell square root of 400 minus 144 end root end cell row blank equals cell 16 space cm end cell row blank blank blank row cell L subscript C D A end subscript end cell equals cell 1 half cross times A D cross times D C end cell row blank equals cell 1 half cross times 12 cross times 16 end cell row blank equals cell 96 space cm squared end cell end table end style

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