# Math11

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A model airplane is made on a scale of 1:128.

A)What is the scale factor of the model?

B)If the airplane has a wingspan of 30 cm, what is the wingspan of the actual airplane

Need help on this.

• Math11 -

A)

1 / 128

B )

30 * 128 = 3840 cm = 38.4 m

Remark:

1 m = 100 cm

3840 cm / 100 cm = 38.4 m

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