Answer: 12.5%
Explanation:
Actual measurement of the window = 24 inches
Measured measurement of the window = 27 inches
We need to find the Rivers percent error. It can be calculated as follows :
% = (|actual value-measured value|)/actual value × 100
%
![=(27-24)/(24) * 100\\\\](https://img.qammunity.org/2023/formulas/mathematics/high-school/6ag63y1jnp4bqck3f4dv7netm7g8twpluf.png)
%= 12.5%
So, River's percent error is 12.5%.