The length of a rectangle is 3 times it breadth. If the length is decreased by 3 cm and the breadth increased by 5 cm, the area of the rectangle is increased by 57 cm2. The perimeter of the retangle is
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Area=l*b
1875=3x*x
1875=3x square
625 =x square
25=x
Perimeter =(3x+3x+x+x)
=3*25+3*25+25+25
=75+75+25+25
=150+50
=200
ayshashams12:
are u sure its correct...because i hav the same qn along with options and those options are 18cm 48cm 24cm 20 cm
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