allery5 cm কাষবিশিষ্ট এটা ঘনকৰ মুঠ পৃষ্ঠকালি নিৰ্ণয় কৰা।
A150 cm²
B100 cm²
C125 cm²
D25 cm²
Answer & Solution
Correct answer: A. 150 cm²
এটা ঘনকৰ ছয়খন বৰ্গাকাৰ ফলক থাকে, গতিকে কালি হ'ল 6 x 25 = 150 square centimetres।
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