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45 votes
45 votes
I don't know how to do this

I don't know how to do this-example-1
User Allan Nienhuis
by
2.6k points

1 Answer

9 votes
9 votes

Answer:

a) 2x + 3; b) 0

Explanation:

Area =
4\pi x^2+12\pi x+9\pi =\pi (4x^2+12x+9)=\pi (2x+3)^2

Area =
\pi r^2

a) radius r = 2x + 3

b) 2x + 3 > 0

x > -3/2

The least possible integer value of x is 0

User Dejan Toteff
by
2.7k points