Answer:
22.5%
Explanation:
Given the dimensions of the screen to be 20by4, the area will be given using formula of area if a square since the screen is square I'm shape.
Area of the screen = length × length
Area of the screen = 20×4 = 80
Similarly, if the dimension of the image is 9by2 its area will be given as;
Area of the image = 9×2
= 18.
The percentage of the total screen occupied by the image can be expressed as;
Area of image/Area of screen × 100%
= 18/80×100%.
= 1800/80
= 22.5%
This means the image covers 22.5% of the total screen.