alleryএকটি ট্র্যাপিজিয়ামের সমান্তরাল বাহু রয়েছে 18 m এবং 30 m, উচ্চতা 10 m সহ। পাকা করার খরচ ₹12 প্রতি m²। মোট খরচ?
A₹2160
B₹2880
C₹3600
D₹5760
Answer & Solution
Correct answer: B. ₹2880
ক্ষেত্রফল হল (18+30)×10/2 = 240 m²;
পাকাকরণ খরচ 240×₹12 = ₹2880।
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