1. The size of an uncompressed file can be calculated by multiplication. In the two examples provided, determining the number of "dots" or pixels is identical to determining the area of a rectangle. Multiplying 8.5 inches times 300 dots per inch yields 2550 as the number of pixels in each horizontal row; 11 time 300 yields 3300 for number of rows. The "area" is 2550 times 3300, or 8,415,000 dots or pixels. If 8 bits (1 byte) of information are captured for each pixel, the uncompressed file will have an extent of 8.4 million bytes; if 24 bits are captured, the size triples to 25.2 million bytes. For comparison, an uncompressed binary file (1 bit per pixel) will have one-eighth the extent of the 8-bit file, or about 1 million bytes. The term megabyte is used to refer to 1024 times 1024 bytes (1,048,576), so 8,415,000 is only 8.0 megabytes.

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