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12-04-2022
Mathematics

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The area of a circle with radius r is given by the formula A = (pi)r^2. If a circle has area 4(pi) square inches, what is the radius?

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BasketballEinstein BasketballEinstein

15-04-2022

Answer:

[tex]\displaystyle 2\:in.[/tex]

Step-by-step explanation:

[tex]\displaystyle {\pi}r^2 = A \\ \\ \frac{{\pi}r^2}{\pi} = \frac{4\pi}{\pi} \hookrightarrow \sqrt{4} = \sqrt{r^2} \\ \\ \boxed{2 = r}[/tex]

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