An object 23.0 mm high is 31.0 cm away from a concave spherical mirror with a radius of curvature of 54.0 cm. What is the absolute size of the image?
Maybe these are relevant
Mirror equation in terms of focal length:
Magnification of image:
The Attempt at a Solution
I have already calculated the distance of the image from the mirror to be 209 cm. But how do I calculate the size of the image? Is there a special formula or do I need to use some kind of trigonometry? I had no luck using the trying the above equations...
The correct answer must be 155.