Answer
$$2.67 \times 10^4 \space s$$
Work Step by Step
1. Round off to three significant figures:
- Remove the last two digits (11), and since $1 \lt 5$, just replace them by zeros:
$$26\space 700$$
2. Express in scientific notation.
- Put a decimal point right after the first digit (2), and count the number of remaining digits, which is equal to 4 (6700). Therefore, the number will be multiplied by $10^4$.
$$2.67 \times 10^4$$
