Find the distance between the two points. (1, 2), (7, 6)

What is the total surface area of this square pyramid?

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.