When you are finished, select Close from the File pull-down menu. Next, Open the file Olympus Mons . When the image appears, examine it carefully and make a sketch of what you see. Click on the magnifying glass in the upper left hand corner of the Tools window and move it onto the image. Click the mouse button repeatedly until you can see the shape of the pixels.
All pixels have the same shape.
Sketch that shape. Undo the magnification by double clicking on the magnifying glass in the Tools window. Each pixel in the Olympus Mons image is 1850m on a side. Move the pointer to the Analyze pull-down menu at the top of the screen, depress the mouse button, drag down to Set Scale, and let go. A new window will open.