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The perimeter of the rhombus is 52 cm. If one of the diagonal is 24 cm, the area of the rhombus is equal to :एक समचतुर्भुज का परिमाप 52 सेमी है। यदि इसके एक विकर्ण की लम्बाई 24 सेमी है, तो समचतुर्भुज का क्षेत्रफल बराबर है :

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Correct answer: B. 120 cm2120 सेमी2

Explanation

Side = 52/4 = 13 cm. Half of the given diagonal = 12 cm, so half of the other diagonal = √(13² − 12²) = √25 = 5 cm, giving the second diagonal = 10 cm. Area = ½ × d₁ × d₂ = ½ × 24 × 10 = 120 cm².भुजा = 52/4 = 13 सेमी। दिए गए विकर्ण का आधा = 12 सेमी, अतः दूसरे विकर्ण का आधा = √(13² − 12²) = √25 = 5 सेमी, अर्थात् दूसरा विकर्ण = 10 सेमी। क्षेत्रफल = ½ × d₁ × d₂ = ½ × 24 × 10 = 120 सेमी²।

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