Megapixel is like megabite. Megabite has 1 000 000 bytes so megapixel has 1000 000 pixels. Mega refers to 10^6
An all-in-one scanner includes a printer.
The prefix M (mega) is equivalent to 10^6 (one million). 1 megapixel = 1*10^6 = 1000000 pixels 800000 pixels = 800000/10^6 = 0.8 megapixels
100,000
This depends on the pixel settings. a low resolution such as 72 dpi gives 28.34 pixels per centimeter. a high resolution such as 1200 dpi gives 472.44 pixels per centimeter.