Question

Bantu jawab no.27 sam 28 plisss

Answer 1

27)

EF = (DE×AB)+(AE×DC)
-------------------------
AD

EF = ( 3×16)+(2×6)
------------------
5

EF = 48+12
----------
5

EF = 60/5
EF = 12cm

28) gambar segitiga BCA siku" di C dan segitiga EDA siku" di D

cari EA dahulu
EA = √8²+6² = √100 =10
AC = 32

AB/EA =AC/DA
BD+DA/ EA = AC/DA
BD+8/10 = 32/8
8BD +64 = 320
8BD = 320-64
8BD = 256
BD = 256/8
BD = 32cm