If the length and breadth of a rectangle are in the ratio 3 : 2 and its perimeter is 20 cm, then the area of the rectangle (in cm^{2}) is

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

If the length and breadth of a rectangle are in the ratio 3 : 2 and its perimeter is 20 cm, then the area of the rectangle (in $cm^2$) is

A24 $cm^2$

B36 $cm^2$

C48 $cm^2$

D12 $cm^2$

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Correct answer is: $24c{m}^2$ Explanation: $2(l+b)=20cm$ $2(3x+2x)=20cm$ $2\times 5x=20cm$ $10x=20$ $x=2$ $\therefore length=3\times 2=6cm$ $breadth=2\times 2=4cm$ $area=length\times breadth$ $=6\times 4=24c{m}^2$ suresh ? answered Dec 23 '2019 at 16:43 All Comments

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