Answer:
17 in.
Explanation:
We know that the two sides (other than the hypotenuse) are given as
a = 15 in
b = 8 in
Using Pythagorean Theorem, we can calculate the length of the hypotenuse as
![c^ {2} =a^(2) + b^(2)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/59opqtpj82u515ceh5qvldcn4wrmro6lme.png)
![c^(2) = (15)^(2) + (8) ^(2)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/9of3rtuvcb9qnyr4r4825h6mxwsfh2vuwx.png)
![c^(2) =289](https://img.qammunity.org/2019/formulas/mathematics/middle-school/n1czlnib423948hqoc4f7bojt8kg6od9of.png)
Taking square-root on both sides, we get
c = 17 in.
Hence, the frame-maker would read the measurement as 17 in on the yardstick.