Question

Find the scale factor in each of the following and state the type of size transformation:
Actual area = 64m², Model area = 100cm² 

Answer 1

Actual area = 64m², Model area = 100cm² 
Actual area
= 64 x 10000cm²
= 640000cm² 
Scale factor

= `sqrt(("Model Area")/("Actual Area")`

= `sqrt((100)/(640000)`

= `sqrt((1)/(6400)`

= `sqrt(1)/(80)`

Scale factor = 0.0125
Since the scale factor < 1 and > 0
⇒ Type of size transformation = reduction.