Penjelasan dengan langkah-langkah:
4)
BD/AB = DE/AC
9/(9+7) = DE/12
9/16 = DE/12
DE = (12 x 9)/16
DE = 108/16
DE = 6¾ cm
5)
( 4 x 16 + 5 x 7 )
EF = –––––··–·–---------
4 + 5
64 + 35 99
EF = ------------ = ----- = 11 cm
9 9
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Penjelasan dengan langkah-langkah:
4)
BD/AB = DE/AC
9/(9+7) = DE/12
9/16 = DE/12
DE = (12 x 9)/16
DE = 108/16
DE = 6¾ cm
5)
( 4 x 16 + 5 x 7 )
EF = –––––··–·–---------
4 + 5
64 + 35 99
EF = ------------ = ----- = 11 cm
9 9