Question

A model of cargo tuck is made to a scale of 1:40. The length of the model is 15cm. Calculate: The base area of the truck, if the base area of the model is 30m² 

Answer 1

Scale = 1:40

`"Area(model)"/"Area(truck)"` = Scale

`(30 xx (100)^2)/"Area(truck)" = (1)/(40)^2`

Area(truck) = 30 x 1600 x 10⁴
Area(truck) = 4. x 10⁸cm².