alleryA 330 cm² মোজাইক বেস 11 cm, উচ্চতা 6 cm এর সমান্তরাল টাইলস ব্যবহার করে; কতজন?
A3
B6
C4
D5
Answer & Solution
Correct answer: D. 5
প্রতিটি টাইল কভার করে 11 × 6 = 66 সেমি ², তাই মোজাইকের প্রয়োজন 330 ÷ 66 = 5 টাইলস৷
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