panjang CE berdasarkan gambar disamping adalah

AC = 77 cm
BE = 30 cm
DE = 35 cm

DE / BE = AC / BC
35 / 30 = 77 / BC
35BC = 77 . 30
35BC = 2310
BC = 2310/35
BC = 66 cm

CE = BC - BE
CE = 66 - 30
CE = 36 cm (B)

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