Question
Download Solution PDFयदि एक चतुर्पाश्वीय का आयतन 18√2 सेमी3 है, तो चतुर्पाश्वीय के पार्श्व पृष्ठीय क्षेत्रफल ज्ञात कीजिए।
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Detailed Solution
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यदि एक चतुर्पाश्वीय का आयतन 18√2 सेमी3 है,
गणना:
माना चतुर्पाश्वीय किनारे की लंबाई a सेमी है
अब, प्रश्न के अनुसार
√2/12 × a3 = 18√2
⇒ a3 = 216
तो, a = 6 सेमी
तो, पार्श्व पृष्ठीय क्षेत्रफल = 3 × एक पार्श्व फलक का क्षेत्रफल
⇒ 3 × √3/4 × 62
∴ 27√3 सेमी2
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