Answer:
A'C' = 15
The measure of angle A = 37 degrees
Step-by-step explanation:
Given a dilation factor of 3, all we need to do is multiply the lengths of the sides of the triangle with 3 which is the scale factor as shown below;
![\begin{gathered} AC=5 \\ A^(\prime)C^(\prime)=5*3=15 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/nd8aos46g3sy5b34sqyw07igg18r4i4tp4.png)
After a dilation, the angles remain unchanged, so the measure of angle A will still be 37 degrees.