A) 20 cm
B) 15 cm
C) 22 cm
D) 40 cm
Correct Answer: B
Solution :
Area\[=180\,\,c{{m}^{2}}=l\times b=180\,\,c{{m}^{2}}\] \[1\times 12=180\,\,c{{m}^{2}}\] \[1=\frac{180}{12}=15\,\,cm\]
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