3.5 cm x 4.5 cm is equivalent to 276 x 354 pixels at 200 dpi.
Explanation:
The dimensions given are 3.5 cm x 4.5 cm
Since, 1 inch is equal to 2.54 centimeters
(4.5/2.54) = 1.77
(3.5/2.54) = 1.38
3.5 cm x 4.5 cm is equal to 1.38 in x 1.77 in
According to, the given dpi (dots per inch or pixels per inch) is 200 which means there are 200 dots or pixels in 1 inch
Therefore, the pixel dimensions can be calculated as follows: 1.38 x 200 x 1.77 x 200 pixels = 276 x 354 pixels.