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Question) Compute the following:
a) Size of 420 × 300 image at 240 pixels per inch.
b) Resolution (per square inch) of 3 × 2 inch image that has 768×512 pixels.
c) Height of the resized image 1024×768 to one that is 640 pixels wide with the same aspect ratio.
d) Width of an image having height of 4 inches and an aspect ratio 1.5.
Answer:a) Size of 420× 300 image at 240 pixels per inch 1.75 * 1.25 sq.inches.
b) Resolution of 3× 2 inch image that has 768 × 512 = 256 pixels per inch.
c) Height of the resized image 1024 × 768 to one that is 640 pixels wide with the same aspect ratio = 640 * 768 / 1024 = 480 pixels.
d) Width of an image having height of 4 inches and an aspect ratio 1.5 = 6 inches.
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