A) 10
B) 20
C) 30
D) 40
Correct Answer: A
Solution :
[a] Let the side of square \[=x\,cm\] Then, breadth of rectangle \[=\frac{3}{2}x\,cm\] According to the question,\[20\times \frac{3}{2}(x)=3{{x}^{2}}\] \[\therefore \] \[x=10\,cm\] |
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