Question

1. 15 in. 6 in. 18 in. 10 in. 4 in. s s = ______ in.

Explanation:

Step1: Identify similar - shaped figures

The two figures are similar. The ratio of corresponding sides is the same.

Step2: Set up proportion

We can set up the proportion using the ratio of the non - parallel sides of the trapezoid - like figures. $\frac{15}{10}=\frac{18}{s}$.

Step3: Cross - multiply and solve

Cross - multiplying gives us $15s = 10\times18$. Then $15s=180$. Dividing both sides by 15, we get $s=\frac{180}{15}=12$.

Answer:

12