alleryএকটি ত্রিভুজাকার পতাকার ভিত্তি রয়েছে 18 cm এবং উচ্চতা 10 cm; এর এলাকা কি?
A45 cm²
B28 cm²
C90 cm²
D180 cm²
Answer & Solution
Correct answer: C. 90 cm²
পতাকার ক্ষেত্রফল হল ½ × 18 × 10 = 90 সেমি ²।
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