एका आयताच्या लांबी आणि रुंदीत अनुक्रमे 8%आणि ५% ची वाढ केली असता,आयताचे क्षेत्रफळ किती टक्क्यांनी वाढेल ?

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SSC CGL 2022 Tier-I Official Paper (Held On : 01 Dec 2022 Shift 1)
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  1. 13.4%
  2. 15.4%
  3. 12.4%
  4. 16.4%

Answer (Detailed Solution Below)

Option 1 : 13.4%
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Detailed Solution

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दिलेल्याप्रमाणे:

आयताची लांबी आणि रुंदी अनुक्रमे 8% आणि 5% ने वाढली आहे.

वापरलेली संकल्पना:

A%आणि B% च्या सलग दोन वाढीनंतर अंतिम टक्केवारीत बदल\((A + B + {AB \over 100})\%\)

गणना:

क्षेत्रफळातील अंतिम टक्केवारी वाढ = \(8 + 5 + \frac {8 \times 5}{100}\) = 13.4%

क्षेत्रफळ 13.4% ने वाढेल.

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