Area of triangle of sides 24 cm, 25 cm and 7 cm is equal to the area of a rectangle of length 14 cm, then perimeter of the rectangle is :भुजाओं 24 सेमी, 25 सेमी और 7 सेमी वाले एक त्रिभुज का क्षेत्रफल 14 सेमी लम्बाई वाले एक आयत के क्षेत्रफल के बराबर है, तब उस आयत का परिमाप है :
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Correct answer: D. 40 cm40 सेमी
Explanation
Since 7² + 24² = 49 + 576 = 625 = 25², the triangle is right-angled and its area = ½ × 7 × 24 = 84 cm². The rectangle has 14 × breadth = 84, so breadth = 6 cm. Perimeter = 2(14 + 6) = 40 cm.चूँकि 7² + 24² = 49 + 576 = 625 = 25², त्रिभुज समकोण है और इसका क्षेत्रफल = ½ × 7 × 24 = 84 सेमी²। आयत में 14 × चौड़ाई = 84, अतः चौड़ाई = 6 सेमी। परिमाप = 2(14 + 6) = 40 सेमी।More Mathematics & Numerical Ability questions
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