Can somebody me with the math's questions on pythagoras theorem?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6