SSC CHSL 7 Jan 2017 Shift 1 Paper

Question : 51 of 100

Marks: +1, -0

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and DE are 10 cm, 5 cm and 6 cm respectively. What is the length of BC?

9 cm
2 cm
3 cm
11 cm

Validate

Solution:

DE is parallel to BC
⇒

{AD}/{AB}={DE}/{BC}

⇒

10/{10+5}=6/{BC}

⇒

2/3=6/{BC}

⇒

BC=3×3=9 cm

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