allery3 cm × 4 cm × 12 cm కొలతలు గల దీర్ఘఘనం యొక్క అత్యంత పొడవైన కర్ణం ఎంత?
A13 cm
B19 cm
C15 cm
D11 cm
Answer & Solution
Correct answer: A. 13 cm
కర్ణం అనేది 9 + 16 + 144 యొక్క వర్గమూలం, ఇది 169 యొక్క వర్గమూలం, లేదా 13 cm అవుతుంది.
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