When making a scale drawing of a school, a scale of 1cm to 8 metres is used. What would be the actual length of a wall that is 16cm on the drawing?

Answer 1

Using the given scale of 1cm to 8 metres, we can set up a proportion:

1 cm = 8 m
16 cm = x

Cross multiplying, we get:

1 * x = 8 * 16
x = 128

Therefore, the actual length of the wall is 128 metres.