Grades 9-10 Video Solutions 2025-2025_9-10

Video Transcription

Video Summary

Anna looks at a photo on her smartphone with a 16:9 display format that fills the entire screen. When she rotates the phone, the image format remains the same but covers less of the screen. Originally, the width becomes the new picture's length upon rotation. The new dimensions are calculated based on this change, with the new length being \( \frac{9}{16} \) of the original. Consequently, both the new width and length form a smaller rectangle with an area ratio of \( \frac{81}{256} \) of the original display area. Thus, the smaller picture occupies \( \frac{81}{256} \) of the display, answer E.

Keywords

smartphone

16:9 display

image rotation

area ratio

screen format