2 Answers

Sinapse · Answer 1 · 2018-07-21T01:15:04+0000

Answer:

D.
$278\text{ cm}^(2)$ .

Explanation:

We have been given a graph of a circle and we are asked to find the area of our given circle.

We will use area of circle formula to find the area of our given circle.

$\text{Area of circle}=\pi r^(2)$ , where r is radius of the circle.

We can see from our graph that radius of our given circle is 9.4 cm. Upon substituting r=9.4 and
$\pi=3.14$ in above formula we will get,

$\text{Area of circle}=3.14* (9.4\text{ cm})^(2)$

$\text{Area of circle}=3.14* 88.36\text{ cm}^(2)$

$\text{Area of circle}=277.5911268711941306\text{ cm}^(2)\approx 278\text{ cm}^(2)$

Therefore, the approximate area of our circle will be
$278\text{ cm}^(2)$ and option D is the correct choice.

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