A) 80 m
B) 100 m
C) 90 m
D) 95 m
Correct Answer: A
Solution :
Volume of rectangle \[=L\times B\] \[\therefore \] \[5x\times 4x=500\,sq\,\,m\] Or \[2{{x}^{2}}=500\,sq\,\,m\] \[\therefore \] \[{{x}^{2}}=\frac{500}{20}=25\] \[\therefore \] \[x=5\] \[\therefore \] \[L=5\times 5=25\,m\] \[B=5\times 4=20\,m\] \[\therefore \] Perimeter \[=(L+B)m\] \[=2\,(25+20)\] \[=2\times 45=90\,m\]You need to login to perform this action.
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