Question

A triangular sign has sides of length 2.0m, 5.0m, and 6.3m. In a photograph of it, the smallest side is1.5 cm long. How long are the other sides in the photograph? Round to one decimal place. Include a diagram.

Answer 1

We have:

1 m = 100 cm, therefore

Original triangular sign

Side 1 = 2.0 m = 200 cm

Side 2 = 5.0 m = 500 cm

Side 3 = 6.3 m = 630 cm

The ratio of the smaller side is:

This is the scale factor used in the photograph. So: