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4. The function A(r) = πr² gives the area of a circle with radius r. What is the context domain?

I only need help with #4 pls

4 The Function Ar Πr Gives The Area Of A Circle With Radius R What Is The Context Domain I Only Need Help With 4 Pls class=

Sagot :

Answer:

Domain = [0 , +∞)

Step-by-step explanation:

since r is the radius of a circle

Then

r must be a positive number.

Then

r ≥ 0

NOTE : if r = 0 ,then the circle reduces to a point .

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