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draw a venn diagram to show interdependence of the sets a, b and c if:
1) a⊆b⊆c
2)a ⊆c, b ⊆ c and a⋂b=ø
3.(a⋂b) ⊆ c, but neither a or b are subsets of c.
4. a ⋂ b ≠ ø, b⋂c ≠ ø, c⋂a ≠ ø but a⋂b, b⋂c and c⋂a are disjointed two and two.

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).

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?