যদি একটি আয়তাকার বাগানের দৈর্ঘ্য এবং প্রস্থ উভয়ই ১০% হারে বাড়ানো হয় , তবে বাগানটির ক্ষেত্রফল কত হারে বাড়বে?
A. ১০%
B. ২০%
C. ২১%
D. ৩৬%
E. ৪৪%
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সঠিক উত্তরঃ
C.
২১%
Explanation:
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