The length of a rectangular chart is thrice its breadth. The perimeter of the chart is 168 cm. What is the length of the chart and Find the area of the chart if b is the breadth of the chart?
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Answer:
breadth =x
length =3x
2(x+3x)=168
2x+6x=168
8x=168
x=168/8
x=21
breadth =21
length =3*21=63
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