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Sign convention: radii of curvature (lens maker's formula)

Problem

Priyanka is trying to find the power of her lens shown below. She wants to use the lens maker's equation for this purpose.
Identify R, start subscript, 1, end subscript and R, start subscript, 2, end subscript for the lens.
Note: Use the Cartesian sign convention.
R, start subscript, 1, end subscript, equals
R, start subscript, 2, end subscript, equals
Stuck?
Stuck?