alleryএকটি রম্বসের কর্ণ রয়েছে 16 cm এবং 30 cm। এর ক্ষেত্রফল ও পরিধি কত?
A240 cm²; 64 cm
B480 cm²; 68 cm
C480 cm²; 92 cm
D240 cm²; 68 cm
Answer & Solution
Correct answer: D. 240 cm²; 68 cm
ক্ষেত্রফল হল 16×30/2 = 240 সেমি ²;
লম্ব অর্ধ-কর্ণগুলি হল 8 এবং 15, প্রতিটি বাহু 17 এবং পরিধি 68 সেমি করে।
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