3.5 cm x 4.5 cm is equivalent to 138 x 177 pixels at 100 dpi.
Explanation:
Given, the dimensions are 3.5 cm x 4.5 cm
Since, 1 inch = 2.54 centimeters
(3.5/2.54) = 1.38 inch
(4.5/2.54) = 1.77 inch
3.5 cm x 4.5 cm is equal to 1.38 in x 1.77 inch
According to, the given dpi (dots per inch or pixels per inch) is 100 which means there are 100 dots or pixels in 1 inch.
Therefore, the dimensions in pixels are 1.38 x 100 x 1.77 x 100 pixels = 138 x 177 pixels.