Image storage problems usually ask for the amount of memory needed to store a picture. The key idea is to combine the number of pixels with the amount of data per pixel, then convert units if needed.
If the image dimensions are given, multiply:
width × height = total pixels
This gives the number of picture elements in the image.
Use the color depth or bits per pixel if it is given. Multiply:
total pixels × bits per pixel = total bits
If the question gives bytes per pixel instead, multiply directly by that value.
Often the answer must be in bytes, kilobytes, megabytes, or similar. Convert carefully using the unit relationships given in the problem or the standard binary/decimal convention used in your course.
Carry out the arithmetic completely and write the final value in the requested unit.
Make sure the answer is reasonable: larger images or higher color depth should give a larger storage size. Also confirm that your unit conversion matches the question.
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