allery3 cm × 4 cm × 12 cm அளவுகள் கொண்ட ஒரு கனச்செவ்வகத்தின் மிக நீளமான மூலைவிட்டம் என்ன?
A13 cm
B19 cm
C15 cm
D11 cm
Answer & Solution
Correct answer: A. 13 cm
மூலைவிட்டம் என்பது 9 + 16 + 144 என்பதன் வர்க்கமூலம் ஆகும், இது 169-ன் வர்க்கமூலம், அதாவது 13 cm ஆகும்.
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