Can 5, 2, 4 be the measures of the sides of a triangle?

Yes

Step-by-step explanation:

In order to form a triangle, the sum of two sides must be GREATER than the third side.

a + b > c    &      a + c > b      &     b + c > a

5 + 2 > 4    &      5 + 4 > 2     &     4 + 2 > 6

    True                  True                   True

The sides 5, 2, 4 satisfy the rules for forming a triangle.

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.