A chord cuts off a 120 degree arc. If the radius of the circle is 26 inches, find the chord length

Solve for x i'll try to attach the files bc it's not letting me for some reason

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

What expression is equivalent to 1/2(2+3x-6)