How many four-digit numbers with a sum of their digits equal to 2 are there?

Which choice represents the sample space ,s for this event

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120