Multiple choice

The Perimeters of two similar triangles are 30 cm and 20 cm respectively. If one side of the first triangle is 9 cm determine the corresponding side of the second triangle. दो समरूप त्रिभुजों की परिमाप क्रमशः 30 सेमी और 20 सेमी है। यदि पहले त्रिभुज की एक भुजा 9 सेमी लम्बी है। तो दूसरे त्रिभुज की भुजा की लम्बाई ज्ञात कीजिए ?

  1. 15 cm/सेमी

  2. 6 cm/सेमी

  3. 13.5 6 cm/सेमी

  4. 5 cm/सेमी

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Similar triangles have proportional sides and perimeters. The ratio of perimeters 30:20 simplifies to 3:2, so all corresponding sides are in the same ratio. If the first triangle's side is 9 cm, the corresponding side in the second triangle is 9 × (2/3) = 6 cm.