Question

A blueprint was using a scale of 3 cm=4.5m. find the actual length if it is 5 cm on the drawing. show work

Answer 1

For this case what we can do is the following rule of three:
3cm ---> 4.5m
5cm ---> x
Clearing the value of x we have:
x = (5/3) * (4.5)
x = 7.5 m
Answer:
the current length if it is 5 cm on the drawing is:
x = 7.5 m