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Mathematics 17 Online
OpenStudy (anonymous):

The seventh-grade class is building target areas for a PE activity. The bases for the game will be in a circular shape. The diameter of each circle is 3 feet. Approximately, how many square feet of the turf needs to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth.

OpenStudy (anonymous):

7.1 square feet 9.4 square feet 18.8 square feet 28.3 square feet

OpenStudy (anonymous):

\[A=\frac{ \pi d^2 }{ 4 }\] d = diameter = 3

OpenStudy (anonymous):

?

OpenStudy (anonymous):

@twistnflip can you help please

OpenStudy (anonymous):

plug in 3 for d. What's 3² ?

OpenStudy (anonymous):

6?

OpenStudy (anonymous):

wait 9?

OpenStudy (anonymous):

yes, then mulitply by 3.14

OpenStudy (anonymous):

Yep, do you still need help?

OpenStudy (anonymous):

so 9 times 3.14?

OpenStudy (anonymous):

yes 9 * 3.14

OpenStudy (anonymous):

You guys got it. Maybe next time

OpenStudy (anonymous):

so 28.26?

OpenStudy (anonymous):

yeah, now divide by 4

OpenStudy (anonymous):

7.065?

OpenStudy (anonymous):

that's your answer

OpenStudy (anonymous):

ohh ok thanks :D

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