niqah Posts: 2, Reputation: 1 New Member #1 Apr 17, 2009, 12:35 PM
Dennis is buliding a scale model he needs to find how tall will his model be?
Dennis is building a scale model of an office building. He has chosen to use a sclae of 1.0 in. = 15 ft. If the actual height of the bulding is 180ft, how tall will his model be?? :)
 Capuchin Posts: 5,255, Reputation: 656 Uber Member #2 Apr 17, 2009, 01:02 PM

for similar objects with dimensions (x,y) and (x',y'), x/x' = y/y'.
 Unknown008 Posts: 8,076, Reputation: 723 Uber Member #3 Apr 17, 2009, 08:39 PM

Or, if you are not used to formulae, by reasoning,

15 ft is represented by 1.0 in.
1 ft is represented by __ in.
So, 180 ft will be represented by __ in.
 Lightning55 Posts: 97, Reputation: 7 Junior Member #4 Apr 18, 2009, 02:54 PM

Hmm...
I'll help a bit more
1in = x
---- ----
15ft 180ft

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