Question
Download Solution PDFവൃത്തസ്തൂപികയുടെ ചരിവ് 15 സെൻ്റീമീറ്ററും വൃത്തസ്തൂപികയുടെ ഉയരം12 സെൻ്റീമീറ്ററുമാണ്. വൃത്തസ്തൂപികയുടെ ആകെ ഉപരിതല വിസ്തീർണ്ണം
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFനൽകിയിരിക്കുന്നത് :
വൃത്തസ്തൂപികയുടെ ചരിവ് ഉയരം l = 15 സെ.മീ
വൃത്തസ്തൂപികയുടെ ഉയരം h = 12 സെ.മീ
സൂത്രവാക്യം:
വൃത്തസ്തൂപികയുടെ ആകെ ഉപരിതല വിസ്തീർണ്ണം = (r (r + l)
l 2 = h 2 + r 2
കണക്കുകൂട്ടൽ:
l2 = h2 + r2
⇒ 152 = r2 + 122
⇒ 225 = r2 + 144
⇒ r2 = 225 - 144
⇒ r = √81
⇒ r = 9
∴ വൃത്തസ്തൂപികയുടെ ആകെ ഉപരിതല വിസ്തീർണ്ണം = × × 9 × (9 + 15) = × × 9 × 24 = 216π സെ.മീ2Last updated on Jun 11, 2025
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