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iren2701 [21]
3 years ago
5

POINTS + BRAINLIEST TO CORRECT ANSWER

Physics
1 answer:
Elza [17]3 years ago
4 0

Answer:

<h2>5.3 m</h2>

Explanation:

The standard film size for one popular camera was<u> 79 mm square</u>.

The film was <u>116 mm behind the lens</u>.

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

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:

<u>1800 mm </u> =  <u>     39.5 mm   </u>

     x                    116 mm

39.5 (x) = 1800 (116)

x =  <u> 208,800</u>

         39.5

x = 5286 mm * <u>      1  m     </u>

                          1000 mm

x = 5.3 m

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