Answer:a
Step-by-step explanation:
Answer:
Area of circle = π r ^ 2
= 3.14 × ( 42) ^ 2
= 5538.96 in^2
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In this problem, you must use SohCahToa which basically means:
Sin - opposite over hypotenuse
Cosine - adjacent over hypotenuse
Tangent - Opposite over hypotenuse
So in this picture we have 4 -which is on the opposite side of x - and a 5 -which is the hypotenuse of the triangle. This means we must use sin.
Using a calculator you put in:

Your answer is 53.13 degrees