Question 1 of 1 What are some of the things your employer should do to prevent worker falls and accidents using
portable ladders at the workplace?

Safely position portable ladders so the side rails extend at least three feet above the landing. Secure side rails of the ladder at the top to a sturdy support and use a grab device when three-foot extension is not possible. When carrying tools, carry them in a belt or consider raising them with a rope.

Explanation:

a, b, c - sides of a triangle

a + b > c

a + c > b

b + c > a

we have a = 5m and b = 11m. substitute:

5 + 11 > c

16 > c → c < 16

5 + c > 11         subtract 5 from both sides

c > 6

11 + c > 5         subtract 11 from both sides

c > -6

c < 16 and c > 6 and c > -6

thereofre your answer is 6m < c < 16m