ΔABC ~ΔDEF आणि या त्रिकोणांच्या परिमिती अनुक्रमे 32 सेमी आणि 12 सेमी आहेत.

जर DE = 6 सेमी, तर AB ची लांबी किती असेल?

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SSC CGL 2022 Tier-I Official Paper (Held On : 13 Dec 2022 Shift 1)
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  1. 16 सेमी
  2. 14 सेमी
  3. 12 सेमी
  4. 18 सेमी

Answer (Detailed Solution Below)

Option 1 : 16 सेमी
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दिलेले आहे:

ΔABC ~ Δ DEF आणि या त्रिकोणांच्या परिमिती 32 सेमी आणि 12 सेमी आहेत.

DE = 6 सेमी

वापरलेली संकल्पना:

1. जर दोन त्रिकोण समान असतील तर त्यांचे संगत कोन एकरूप असतात आणि संबंधित बाजू समान प्रमाणात असतात.

2. त्रिकोणाची परिमिती ही त्याच्या सर्व बाजूंची बेरीज असते.

गणना:

प्रश्नानुसार,

(AB + BC + AC) = 32      ....(1)

(DE + EF + DF) = 12      ....(2)

ΔABC ~ Δ DEF पासून,

1 पासून,

(AB + BC + AC) = 32

⇒ K(DE + EF + DF) = 32

⇒ K × 12 = 32

⇒ K = 32/12

⇒ K = 8/3

आता, AB

⇒ 8/3 × DE

⇒ 8/3 × 6 = 16 सेमी

∴ AB ची लांबी 16 सेमी आहे.

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