Subject
Bank Exam
Topic
Probashi Kallyan Bank Ltd (Senior Officer) - 09.10.2021
The surface area of hollow cylinder with radius 'r' and height 'h' is measured by -
The surface area of hollow cylinder with radius 'r' and height 'h' is measured by -
ক)
2πr-hখ)
2πr+hগ)
πrhঘ)
2πrhExplanation
প্রশ্নঃ- 'r' ব্যাসার্ধবিশিষ্ট ও 'h' উচ্চতাবিশিষ্ট একটি ফাঁকা সিলিন্ডারের পৃষ্ঠতলের ক্ষেত্রফল কত ? উত্তরঃ- এখানে , 'r' ব্যাসার্ধবিশিষ্ট এবং 'h' উচ্চতাবিশিষ্ট সিলিন্ডারের পৃষ্ঠতলের ক্ষেত্রফলের সূত্র হল 2πrh বর্গ একক ।Related questions
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