Question

Find the missing dimension. Use the scale factor 1 : 12.

Item Model Actual
Football helmet Diameter: mm Diameter: 21 cm

Answer 1

17.5

Explanation:

Answer 2

Answer:

17.5 mm

Explanation:

First, you need to find out what number times 12 equals 21. To do that, you simply solve 21 divided by 12, which equals 1.75 cm. Since you want the answer in mm, you multiply 1.75 by ten because one cm = 10 mm

Hope that this helps! (: