Digital image problem 2

 Second problem:

Which resolution would the same picture need to have a 300 dpi picture?

Step 1: Convert millimeters to inches

We know that:

$$1 \text{ inch} = 25.4 \text{ mm}$$

Convert each dimension:

• Width:

  $$210 \div 25.4 = 8.267716535 \text{ inches}$$
  

• Height:

  $$297 \div 25.4 = 11.69291339 \text{ inches}$$
  

Step 2: Multiply each dimension in inches by the desired resolution (300 dpi)

• Width in pixels:

  $$8.267716535 \times 300 = 2480.31496 \text{ px}$$
  

• Height in pixels:

  $$\mathrm{-\; 11.69291339}\times 300=3507.874017\text{ pixels}$$

• Final required resolution: 
• 2480 × 3508 pixels