alleryএকটি আয়তক্ষেত্রের পরিমাপ 15 m × 20 m। এর কর্ণের দৈর্ঘ্য কত?
A30 m
B25 m
C20 m
D35 m
Answer & Solution
Correct answer: B. 25 m
কর্ণটি হলো 225 + 400 = 625-এর বর্গমূল, যা হলো 25 m।
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