Help finding a scaled down length? Easy for smart people, unlike me :-)

  • Context:
  • Thread starter Thread starter matheus
  • Start date Start date
  • Tags Tags
    Length
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
Sign up Log in
2 replies · 3K views
matheus
Messages
19
Reaction score
0
Hi guys,

I need to figure out the length of the side of a roof on a scaled down model.

The picture below shows what I’m trying to calculate. The real house has a central support pole and it is 10 metres high, with length of the side of the roof at 14.67… metres.

If I was to make a scaled down model of this house where the central support pole is 20 cm, how would I calculate the side roof on the model?

As they say a picture tells a thousand words so I drew one up:

23rrgiu.jpg


I have no idea how to calculate that length so if anyone can shed some light I’d be most grateful :cool:

Cheers!
 

Discussion

Mathematics news on Phys.org
matheus said:
Hi guys,

I need to figure out the length of the side of a roof on a scaled down model.

The picture below shows what I’m trying to calculate. The real house has a central support pole and it is 10 metres high, with length of the side of the roof at 14.67… metres.

If I was to make a scaled down model of this house where the central support pole is 20 cm, how would I calculate the side roof on the model?

As they say a picture tells a thousand words so I drew one up:
I have no idea how to calculate that length so if anyone can shed some light I’d be most grateful :cool:

Cheers!

10m = 1000cm. Notice that 1000/50 = 20, so the scaling factor is 1/50.

So what would the length have to be on your scale diagram?
 
Hi ProveIt.

Many thanks for your helpful reply :D

Ok so given what you pointed out, I would say that I need to convert the length in meters to centimeters and then divide by 50, which would give the model length to be around 29.34cm?