scale factor
GH:CD
10:15
2:3
2/3
EH
using the scale factor 2/3
EH/AD=2/3
let EH=x
x/24=2/3
x=(2×24)/3
x= 16
AB
EF/AB=2/3
let AB=y
6/y=2/3
y=(6×3)/2
y=19
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