Answer:
9.6 cm
Step-by-step explanation:
To solve the Russian doll question, you can use proportions.
The height of the largest Russian doll in the picture is 4.5 cm. In real life it is 13.5 cm, so you can put this into a ratio.
4.5/13.5
To find the real-life height of the smallest Russian doll, do the same thing a you did with the largest Russian doll but instead of putting "13.5" (the real-life height) put the variable x.
3.2/x
Make these ratios equal to each other.
Cross multiply.
Divide both sides of the equation by 4.5.
The real-life height of the smallest Russian doll is 9.6 cm.
