Question

A model scale is 1 cm = 8 m.

If the actual object is 40 meters, the model is_______ cm long.

Answer 1

this is a propertions question:

what is is asking is can you find X:

1cm/8m = Xcm/40m

Answer 2

so if you cross-multiply, you get 40 (1) = X (8)

X= 40 (1)/8 = 5
the model will be 5 centimetres long

Answer 3

yes use ratio and proportion

Answer 4

x cm 1 cm
---- = ------ solve for x here to get
40 m 8 m

x= 40(1)/8 = 5cm ans...