Question
Download Solution PDFΔABC-তে, D হল AB-এর বাহুতে একটি বিন্দু যেখানে BD = 3 সেমি এবং DA = 4 সেমি, E হল BC এর উপর একটি বিন্দু যেখানে DE || AC, তাহলে ΔBDE এর ক্ষেত্রফল : ট্রাপিজিয়াম ACED এর ক্ষেত্রফল কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
BD = 3 সেমি
DA = 4 সেমি
অনুসৃত ধারণা:
সমতার ধারণা
গণনা:
এখানে ΔABC ∼ ΔBDE [∵ DE || AC এবং ∠B দুটি ত্রিভুজের জন্য সাধারণ]
সুতরাং,
ΔABC/ΔBDE = 72 /32
⇒ ΔABC/ΔBDE = 49/9
ACED = ΔABC - ΔBDE
⇒ 49 - 9 = 40
∴ অনুপাত হল 9 : 40
∴ সুতরাং ΔBDE এর ক্ষেত্রফল : ট্রাপিজিয়াম ACED এর ক্ষেত্রফল হল 9 : 40
Last updated on Jun 13, 2025
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