Need help with the following which is due to tomorrow.

1. A triangular piece of wood has side lenghts 14cm, 19cm and 30cm. The angle between the 14cm and 19cm sides need to be known to see if it will fit properly into a cabinet. What is the angle, accurate to one decimalplace, between the 14cm and 19 cm sides?

I dont even know how to start here which side should be 14 cm, which 19 and which 30 ?

2. A hot air balloon is to be attached to the grond using two support ropes. One support is attached on one side of the balloon at an angle of elevation of 42 degrees. Another support is attached on the other side of the balloon at an angle of elevation of 50 degrees. The distance between the locations the supports are attached on the ground is 40m.

a) How long is the rope that is attached at the 42degrees ?

b) How high is the balloon.

Here I dont know how to get the answer for a and b.