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KCET2024MathematicsApplication of Derivatives

The length of a rectangle is five times the breadth. If the minimum perimeter of the rectangle is 180 cm , then

Options

  1. ABreadth 15 ~cm
  2. BBreadth 15 ~cm
  3. CLength 15 ~cm
  4. DLength =15 ~cm

Correct answer

B. Breadth 15 ~cm

Step-by-step solution

Since, perimeter 180 2 (length + breadth) 180 5 breadth + breadth 90[ length =5 breadth ] 6 breadth 90 Hence, breadth 15

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