Question

POINTS + BRAINLIEST TO CORRECT ANSWER
In old Polaroid cameras, the image was projected on film that developed inside the camera. The developed image was then ejected from the camera as a printed photograph. The standard film size for one popular camera was 79 mm square. The film was 116 mm behind the lens.
If you wanted a picture of your 1.8-m-tall friend to fill half the frame, how far away from you did she need to stand?

100 points + Brainliest to correct answer

Answer 1

Answer:

5.3 m

Explanation:

The standard film size for one popular camera was 79 mm square.

The film was 116 mm behind the lens.

If you wanted a picture of your 1.8-m-tall friend to fill half the frame,

find:

how far away from you did she need to stand?

solution:

the other person called friend is 1.8 m tall (1,800mm) stood from the other side to fill up half of the frame of 79mm / 2 = 35 mm.

where the film behind the lens is 116mm as given.

so its a ratio and proportion:

1800 mm =       39.5 mm  

     x                    116 mm

39.5 (x) = 1800 (116)

x =   208,800

         39.5

x = 5286 mm *      1  m    

                          1000 mm

x = 5.3 m