a floor plan has a scale of 2cm : 3m
what is the actual length of a room measuring 30 cm on the floor plan?
I got to 20 is that correct?
To solve this problem, you need to use the given scale of the floor plan, which is 2cm : 3m. This means that every 2 centimeters on the floor plan represents 3 meters in reality.
Now, you want to find the actual length of a room that measures 30 cm on the floor plan. To do this, divide the length on the floor plan by the scale factor:
Length on the floor plan / Scale factor = Actual length
So, substituting the values:
30 cm / 2 cm : 3 m = 15 : 3 = 5 meters
Therefore, the actual length of the room is 5 meters. Your answer of 20 meters appears to be incorrect.
Nope.
How have you been taught to solve this kind of problem?
I can show you two different ways.
i cant figure how to do this can you explain
is it 90
i got
2cm/ 3m = 30 cm/n
= 2n = 3 (30)
= n = 90
One way to do this is to set up a proportion or ration.
2 cm is to 3 m as 30 cm is to ? m
2/3 = 30/x
Cross multiply and solve for x.
2x = 90
Divide both sides by 2.
x = 45 m