kahit Isa lang po jan plssss

1.)One number is six more than the other.what are the possible values of the numbers if the sum of their squares is less than 68?

2.)A ball is thrown upwards and its height in feet above the ground is given by h=24t-4t².at what time is height of the ball below 20 feet?

3.)Using one of the walls of his house a man wants to construct a new fence covering a larger area of the ground for his growing number of sheep.the length of the new fence is 10 meters longer than it's width.if the area covered by the old fence is 200 square meters,what could be the possible dimensions of fence?​