Physics question

An object 29.0 mm high is 27.0 cm away from a concave spherical mirror with a radius of curvature of 28.0 cm. How do i get these answers?
a)How far from the mirror is the image? (absolute distance) answer 29.1cm
b)What is the absolute size of the image? answer 3.12 cm

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  1. Follow the procedute I explained in an earlier answer today:

    http://www.jiskha.com/display.cgi?id=1274110901

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