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Area and Volume
The ratio between the perimeter and the breadth of a rectangle is 7 : 3. If the area of the rectangle is 192 sq. cm, what is the length of the rectangle?
A)15 cm B)18 cm C)12 cm D)16 cm E)Data inadequate
Read Solution (Total 1)
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- perimeter:breadth=7:3
2(l+b):b =7:3
2(l+b)/b = 7/3;
6l+ 6b=7b
6l=b
area=192
l*b=192
l*6l=192
6 l^2=192
l^2=32
l=sqrt(32)
l=5.656 - 4 years agoHelpfull: Yes(0) No(0)
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