How to Calculate Radii for a Symmetric Converging Lens to Double Image Size?

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To calculate the radii for a symmetric converging lens that forms an image twice the height of an object placed 34.0 cm from a screen, the relevant equations are (1/f) = (1/s) + (1/s') and (1/f) = (n-1)[(1/R)-(1/R')]. The index of refraction for plastic is given as 1.59. Initially, the poster attempted to solve the problem and arrived at incorrect values of 71.5 and 25.2. Ultimately, the poster resolved the issue independently before receiving further assistance.
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Homework Statement


An object is 34.0 cm from a screen.

What are the radii of a symmetric converging plastic lens (i.e., two equally curved surfaces) that will form an image on the screen twice the height of the object? (Take the index of
refraction of plastic to be 1.59.)

Homework Equations



(1/f) = (1/s) + (1/s')

(1/f) = (n-1)[(1/R)-(1/R')]

The Attempt at a Solution



I attempted to use those two equations to solve the problem, my answers were 71.5 and 25.2. Both were wrong.


If anyone can help within the next 1 hour and 30 minutes I would really appreciate it, thank you
 
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Never mind, I solved it.
 

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