The length of a rectangle is three times the breadth. If the minimum perimeter of the rectangle is 160 cm, then

(A) breadth > 20 cm 

(B) length < 20 cm

(C) breadth x ≥ 20 cm 

(D) length ≤ 20 cm

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1 Answers

(C) is the correct choice.

If x cm is the breadth, then

2 (3x + x) ≥ 160 ⇒ x ≥ 20

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