Answer:
4 feet by 3 feet
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photo.
My answer:
width-to -height ratio of 16:9
Let analyse all possible answers:
- 4 feet by 3 feet
16 divided by 4 is the same as 9 divided by 3 => it is true
- 28 inches by 21 inches
16 divided by 28 is different as 9 divided by 21 => it is wrong
- 48 centimeters by 27 centimeters
16 divided by 48 is different as 9 divided by 27 => it is wrong
- 26 inches by 19 inches
16 divided by 26 is different as 9 divided by 219=> it is wrong
We choose A.
Hope it will find you well.
