alleryএকটি খোলা-শীর্ষ কিউবয়েডাল বাক্স হল 8 × 5 × 3 সেমি; এর বাইরের এলাকা? বেধ উপেক্ষা করুন।
A158 cm²
B120 cm²
C94 cm²
D118 cm²
Answer & Solution
Correct answer: D. 118 cm²
বেস এবং চার দিকের মোট ক্ষেত্রফল রয়েছে 8 × 5 + 2 × 8 × 3 + 2 × 5 × 3 = 118 সেমি ²।
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