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Mimi_x3

  • 4 years ago

Two sections are cut out from a wire of length 25cm. The sections are then used to form two different circles. Find the lowest total area of the circles.

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  1. jimmyrep
    • 4 years ago
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    x + y = 25 where x and y are the circumferences of 2 circles A =[( x /2pi)^2]*pi + [( y /2pi)^2]*pi A = x^2/4pi + y^2/4pi now from first equation y = 25-x plug this into the above equation then differentiate and equate to 0 solve for x and find y calculate the areas using these values

  2. Hero
    • 4 years ago
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    Good job Jimmy

  3. jimmyrep
    • 4 years ago
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    thanx!

  4. Mimi_x3
    • 4 years ago
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    Thank you (:

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