Question

if these two shapes are similar, what is the measure of the missing length c? 3 ft 1 ft 3 ft c = feet

Explanation:

Step1: Set up proportion

For similar shapes, the ratios of corresponding sides are equal. Let the ratio of the sides of the two similar triangles be $\frac{c}{3}=\frac{3}{1}$.

Step2: Solve for $c$

Cross - multiply the proportion: $c\times1 = 3\times3$. So $c = 9$.

Answer:

9