The ratio of the lengths of two corresponding sides of two similar triangles is 15 : 14. The ratio of the areas of these two triangles, in the order mentioned, is:

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 09 Jun, 2025 Shift 1)
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  1. 226 : 197
  2. 15 : 14
  3. 225 : 196
  4. 15√15 : 14

Answer (Detailed Solution Below)

Option 3 : 225 : 196
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Detailed Solution

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Given:

The ratio of the lengths of two corresponding sides of two similar triangles is 15 : 14.

Formula used:

The ratio of the areas of two similar triangles is the square of the ratio of their corresponding sides:

(Ratio of Areas) = (Ratio of Sides)2

Calculation:

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Ratio of Sides = 15 : 14

⇒ Ratio of Areas = (15 : 14)2

⇒ Ratio of Areas = (15)2 : (14)2

⇒ Ratio of Areas = 225 : 196

∴ The correct answer is option (3).

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