Question

You are building a new extension and are looking at the plans.referring to the scale, what is the actual measurement of the wall marked 18 cm on the plan?m

Answer 1

we have that

The scale is equal to
`(1)/(50)`

That means

`1\ cm\ in \ the \ plan=50\ cm\ in \ the \ actual`

so

by proportion

Find the actual measurement of the wall marked
`18`cm on the plan

`(1)/(50)(plan)/(actual)=(18)/(x)(plan)/(actual)\\ \\x=18*50\\ \\x=900\ cm`

Convert to meters

`900\ cm=900/100=9\ m`

therefore

the answer is

`9\ m`