Subject
Quantitative Aptitude
Topic
Areas & Volumes
The curved surface of a right circular cone of height 15cm and base diameter 16 cm?
The curved surface of a right circular cone of height 15cm and base diameter 16 cm?
ক)
60πখ)
68πগ)
120πঘ)
136πExplanation
(প্রশ্ন- একটি শঙ্কুর উচ্চতা ১৫ ও ভূমি ব্যাস ১৬ সেমি।এর বক্রতলের ক্ষেত্রফল কত?) দেওয়া আছে, কোণকের উচ্চতা h=15 cm ভূমির ব্যাস =16 cm অতএব ব্যাসার্ধ=8 cm হেলানো উচ্চতা ,l = √(h 2 + r 2 ) = √{(15) 2 + (8) 2 } = √289 = 17 হেলানো তলের ক্ষেত্রফল =πrl = π × 8 ×17 = 136πRelated questions
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