a divides ab in the ratio 1 by 3 and also f divides AC in the ratio 1 by 3 is equal to 2.8 cm find BC
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11.2 cm
Step-by-step explanation:
AE/AB = AF / AC and
< BAC = < EAF
Triangle ABC similar to triangle AEF (SAS)
by BPT
EF is parallel to BC
AB: AE = BC/EF
Let l be the length of AB
the AE = l/4
1:(1/4)= BC:2.8
= BC/2.8
BC = 2.8 X 4 = 11.2cm
Hope this helps you.
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