ভূমি রেকর্ড ও জরিপ অধিদপ্তর || সার্ভেয়ার / ড্রাফটসম্যান কাম এরিয়া এস্টিমেটর (০৭-০৬-২০২৪) || 2024
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Created:
3 months ago
|
Updated:
1 day ago
Created:
3 months ago
|
Updated:
1 day ago
মনে করি, ত্রিভুজটির বাহুর a 42, b =34, ও c=20
ত্রিভুজটির পরিসীমা 2S = 42+34+20=96
ত্রিভুজটির অর্ধপরিসীমা S = 96 ÷ 2 =48
আমারা জানি,
বিষমবাহু ত্রিভুজের ক্ষেত্রফল=
= 336
Created:
3 months ago
|
Updated:
1 day ago
মনে করি, শ্রেণিটির ছাত্র সংখ্যা x
যেহেতু, প্রতিবেঞ্চে 4 জন করে বসালে 3 টি বেঞ্চ খালি থাকে, সেহেতু
ঐ শ্রেণির বেঞ্চের সংখ্যা
আবার, যেহেতু প্রতিবেঞ্চে 3 জন করে বসালে 6 জনকে দাঁড়িয়ে থাকতে
হয়, সেহেতু ঐ শ্রেণির বেঞ্চের সংখ্যা
যেহেতু শ্রেণির বেঞ্চের সংখ্যা একই থাকবে,
সুতরাং,
বা,
বা, 4x - 24 = 3x +36
বা, 4x - 3x =36+24
বা, x = 60
∴ ঐ শ্রেণির ছাত্র সংখ্যা 60
উত্তর: 60 জন।
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