Question

in the given figure p,q and r are three Parallel Lines l and m are two transversals such that DE = 1.5 cm,EF = 3 cm.Find BC if AB = 2.5 cm.

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Answer 1

Step-by-step explanation:

by rule

AB/BC=DE/EF

2.5/BC=1.5/3

BC= 2.5×3/1.5

BC=5

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Answer 2

Given:

DE = 1.5 cm, EF = 3 cm

To find:

The length of BC if AB = 2.5 cm

Solution:

The length of BC is 5cm.

The lines p, q, and r are parallel and are cut by l and m.

So, the proportion of DE and EF will be the same as the proportion of AB and BC.

DE/EF=AB/BC

Using the values,

1.5/3=2.5/BC

1/2=2.5/BC

BC=2.5×2

BC=5cm

Therefore, the length of BC is 5cm.