Enclosures are usually purchased with the trampoline. If the stores that sell trampolines in your area won't help you, you should contact a manufacturer. You should be able to get manufacturer's information from one of the retailers.
Try visiting your local tent or outdoor equipment store.
Fifty
I would guess about 3-4 kids but I have been on a 15 ft trampoline with 6 kids for 2 weeks strait and no one got hurt so it is really up to the supervisor.
The area is 212.1 square feet.
It depend on your tent building skills. If you're experienced, which I doubt you are, it could take about 15 minutes but if you aren't, it could take over an hour.
No! If you install a 10ft trampoline safety enclosure onto an 8ft trampoline, it may look like it fits, but it will not provide effective protection. Trampoline safety enclosures are fundamental, but it is key to ensure that the right sized enclosure is fitted onto the correct sized trampoline.
15 ft * 15 ft = 15*15 sq ft = 225 sq ft
The weight of a trampoline frame can vary depending on the size and material of the frame. On average, a trampoline frame can weigh between 50-150 pounds. It's best to refer to the specific product specifications for an accurate weight.
10 ft. (Mind you this is only a guess)
I am sure that they are made in China.
Assuming the tent is 140 INCHES by 140 INCHES, even though there is nothing in the question to justify that assumption, the area is 140/12 ft x 140/12 ft = 136.1 sq ft (approx).
Pythagoras theorem tells us that a2 + b2 = c2 So: 102 + 122 = c2 Thus 100 + 144 = 244 = c2 and the square root of 244 is 15,620499351813308788259445471518 so the diagonal is about 15 ft 7 in