Final answer:
The square image Mr. Das found has a height of 700 pixels when the total number of pixels, 490,000, is factored as a square.
Step-by-step explanation:
Mr. Das found a square digital image containing 490,000 pixels. To find how many pixels high the image is, we need the height of the square side since a square has equal sides in both dimensions - height and width. To calculate this, we take the square root of the total number of pixels.
The total number of pixels in the image is 490,000. Given that the image is square, the formula to find the height is:
Square Root of total pixels = Square Root of 490,000.
After calculating, we find that the height of the image is:
700 pixels.
Therefore, the image is 700 pixels high and 700 pixels wide, considering it to be a square. Notably, this indicates that the photo size is below 1 megapixel (MP), as 700 x 700 = 490,000, which when divided by one million gives 0.49 MP. Thus, it falls under the category of images with a very low megapixel count compared to modern standards, where cameras typically feature 12 MP or more.