Question

In ∆ ABC ~ ∆PQR , AB:PQ=2:3. If BC=4 then QR=? options (a) 4 (b) 6 (c)9 (d) 8 *​

Answer 1

Answer:

(b)6

Step-by-step explanation:

AB/PQ=2/3

AB/PQ=BC/QR

2/3=4/QR

QR=4*3/2

QR=6

Answer 2

Answer:

6

Step-by-step explanation:

The concept behind the congruence of the triangle is that sides of the corresponding triangle are in same proportion i,e

if ∆ ABC ~ ∆PQR ⇒ AB:PQ :: BC:QR

$\frac{AB}{PQ} =\frac{BC}{QR} \\\frac{2}{3} =\frac{4}{QR} \\\\QR = 6$

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