An ellipse is described by using an endless string \( \mathrm{P}^{1...

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An ellipse is described by using an endless string
\( \mathrm{P}^{17} \) which is passed over two pins. If the axes are \( 6 \mathrm{~cm} \)

W. and \( 4 \mathrm{~cm} \), the necessary length of the string and the distance between the pins respectively in \( \mathrm{cm} \), are:
(1) \( 6,2 \sqrt{5} \)
(2) \( 6, \sqrt{5} \)
(3) \( 4,2 \sqrt{5} \)
(4) None of these
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