After looking at cells under a microscope you may be asked to do a few calculations.

Below is the triangle you can use for your revision with the 3 equations needed. I always remember it as AIM!!

Magnification Triangle.jpg
Magnification Equation Triangle

Actual image is the real size of the “thing” you are looking at (sometimes called The Object)

Image Size is the measurement, length/height/width, of the image you are looking at

Magnification is how magnified something is