Question
Download Solution PDFएक समबाहु त्रिभुज की भुजा 9 सेमी है। इस समबाहु त्रिभुज के परिगत वृत्त की त्रिज्या क्या है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
समबाहु त्रिभुज की भुजा = 9 सेमी
प्रयुक्त अवधारणा:
परिवृत्त त्रिज्या (R) = (a × b × c)/4 × क्षेत्रफल
गणना:
परिवृत्त त्रिज्या (R) = (a × b × c)/4 × समबाहु त्रिभुज का क्षेत्रफल
⇒ (9 × 9 × 9)/{4 × (√3/4) × 9 × 9}
⇒ 9/√3 = 3√3 सेमी
∴ सही उत्तर 3√3 सेमी है।
Alternate Methodप्रयुक्त अवधारणा:
समबाहु त्रिभुज की परिवृत्त त्रिज्या = भुजा/√3
गणना:
परिवृत्त त्रिज्या (R) = भुजा/√3
⇒ 9/√3 = 3√3 सेमी
∴ सही उत्तर 3√3 सेमी है।
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