Answer:
1)
2) 
Step-by-step explanation:
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Answer:
A. {e, h}
Step-by-step explanation:
In a Venn diagram, the set of elements in any intersection can simply be visualised. The elements contained in the region where the circles representing different sets overlap, are the set of elements of intersection.
In the Venn diagram given, the set of elements contained in the region where the circles representing A and B overlap are {e, h}.
{e, h} is common to both set A and set B.
Answer:
D.
Step-by-step explanation:
The formula is Sum(n) = (n -2) 180.
The area of a circle in terms of the circle's radius

is

Differentiating both sides with respect to

, you get