Respuesta :

Answer:

Circumference: 153.86

Area: 43.96

Step-by-step explanation:

Circumference: 2(3.14)r

Area: 3.14(r^2)

Lets find the Circumference first :)

2(3.14)7

(6.28)7

43.96

Now lets find the area!

3.14(7^2)

3.14(49)

153.86

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Answer:

[tex]beinggreat78~here~to~help.[/tex]

Circumference: 44(round to nearest 10)

Area: 154(round to nearest ten)

To do this problem, let's start with circumference, because we must know that before finding area.

[tex]C=2\pi r=2*\pi *7~rounds~to~43.9823[/tex]

Next, find the area by using the circumference. This time, we will use the exact numbers.

[tex]A=\pi r2\\C=2\pi r[/tex]

Now, solve for area.

[tex]A=\frac{ C^2}{4\pi }=\frac{43.98^2}{4 * \pi } ~rounds~to~153.93806[/tex]

With that information, the problem has been solved.