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E divides AB in the ratio …

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E divides AB in the ratio 1:3 and also divides AC in the ratio 1:3, EF=2.8cm find BC

Posted by Dev Kumar 4 years, 9 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 9 months ago

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 = 11.2m

2Thank You

ANSWER

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