Problem
The smallest gap between rims in the Grand Canyon $549 \mathrm{~m}$. Determine the length of this gap on a map in $\mathrm{cm}$ if the scale factor is $1 / 90000$. Round your answer to 2 decimals.
Solution
Step 1 ：Multiply the actual length of the gap by the scale factor: \(549 \times \frac{1}{90000} = 0.0061 \) meters
Step 2 ：Convert the length to centimeters and round to 2 decimals: \(0.0061 \times 100 = 0.61 \) cm
Step 3 ：\boxed{0.61}
