Question

In the given figure, DE BC. If AD = 2 cm, AB = 5 cm and DE = 3 cm, then BC is equal to 1. 5 cm 2. 6 cm 3. 6.5 cm 4. 7.5 cm​

Answer 1

Step-by-step explanation:

Given: AD=2cm,DB=3cm,AB=5cm

and DE ∣∣BC

Basic Proportionality theorem which states that. if a line is drawn parallel to one side of a triangle the other two sides in distinct points, then the other two sides are divided in the same ratio. So, by basic proportionality theorem.

AD/DB=AE/BE

2/3=5/BE

BC=(5×3)/2

BC=7.5cm

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