alleryஓர் ஒழுங்கு பலகோணம் 40 cm சுற்றளவையும் 6 cm அப்போதத்தையும் (apothem) கொண்டுள்ளது. அதன் பரப்பளவு என்ன?
A240 cm²
B46 cm²
C120 cm²
D60 cm²
Answer & Solution
Correct answer: C. 120 cm²
பரப்பளவு என்பது சுற்றளவில் பாதியை அப்போதத்தால் (apothem) பெருக்குவதாகும், எனவே 0.5 x 40 x 6 = 120 சதுர சென்டிமீட்டர் ஆகும்.
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