Perimeter of rectangle: \[ P = 2(l + b) \]
\[ 50 = 2(15 + b) \]
\[ 25 = 15 + b \] \[ b = 10 \]
Therefore, breadth = \[ 10 \text{ cm} \]
আয়তক্ষেত্রের পরিসীমা: \[ P = 2(l + b) \]
\[ 50 = 2(15 + b) \]
\[ 25 = 15 + b \] \[ b = 10 \]
অতএব প্রস্থ = \[ 10 \text{ সেমি} \]
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