TASK 1
You have the info you need to make the choice in this table for part of the assignment. What you need to consider is the time you would need to travel (which would effectively reduce the actually time of your visit to whichever country you choose) and how much it would cost (what can you afford?).
The choice is yours.
Then you need to consider the reason for your visit: would it be more interesting for you to see the several pyramids or the single Tower of Pisa?
It’s a personal choice, and everyone will have their own preference and their family’s preferences. So this part is an open part of the question: there is no fixed answer.
To view the pyramids would take more time than to view just one historical building, but there are other considerations. Other things to see, places to visit, weather (too hot?), local travel, walking distances, coach trips, etc. All these things could be researched before making the choice.
I can help with the mathematics in your assignment, but I leave the personal choices up to you. I can only answer so much at a time. I hope it helps, considering that your assignment is overdue.
TASK 2
(a) If the aircraft ascended vertically the altitude would be 50×1800=90,000 feet, but the 15º angle of elevation reduces this to 90000sin15=23,294ft approx after a flight time of 50 seconds.
(b) The altitude in metres is 23294/3.3=7,100m approx.
(c) The altitude is 7.1km.
(d) The slope of the flight path is 281/1595=0.1762 approx. This corresponds to the angle 10° approx. That is, tan10=0.1762.