Problema Solution

Calculate the actual length of each object.

a) The scale factor of the enlarged image of a bug is 1:0.125. The bug is 16mm in length.

b) The scale of the image of the A380 Airbus is 1:909. Answer in metres. The length of the airplane is 8 cm.

Answer provided by our tutors

Let x represent the actual length of the object


a) The scale factor of the enlarged image of a bug is 1:0.125. The bug is 16mm in length.


16 : x = 1 : 0.125

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x = 2 mm


The actual length of the bug is 2 mm.



b) The scale of the image of the A380 Airbus is 1:909. Answer in metres. The length of the airplane is 8 cm.


8 : x = 1 : 909

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x = 7272 cm


x = 72.72 m


The actual length of the airplane is 72.72 meters.