Height of the image of my friend on the film

[syllll_213]

Homework Statement

You have a movie camera with a single lens of focal length 98 mm. You would like to take a picture of a friend who is standing 29 m away. Your friend is 155 cm tall, what is the height of the image of your friend on the film in mm?

Relevant Equations

1/f+1/di+1/do

Hi, I just want to check if my working is correct cuz I seems to get the wrong answer in my first attempt by inserting 0.054mm as the heigh.... the height seems a bit small to me.

 

[nasu]

Check again your conversion of the 29 m distance into cm.
And make sure you get the distance image in the last step.

 

[haruspex]

Check again your conversion of the 29 m distance into cm.

All conversions were to mm.

View attachment 359892

Check your calculation of $d_i$. There is something you forgot to do.