allery3 cm × 4 cm × 12 cm ମାପ ଥିବା ଏକ ଆୟତାକାର ଘନର (cuboid) ସବୁଠାରୁ ଲମ୍ବା କର୍ଣ୍ଣ କେତେ?
A13 cm
B19 cm
C15 cm
D11 cm
Answer & Solution
Correct answer: A. 13 cm
କର୍ଣ୍ଣ ହେଉଛି 9 + 16 + 144 ର ବର୍ଗମୂଳ, ଯାହାକି 169 ର ବର୍ଗମୂଳ, ବା 13 cm ଅଟେ।
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