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Mathematics 7 Online
OpenStudy (anonymous):

Which is the best approximation for the circumference of a circular garden that is 36 ft in diameter? A. 226 ft B. 113 ft C. 108 ft D. 54 ft

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (anonymous):

no

OpenStudy (skullpatrol):

The ancient Greeks found the formula for the circumference of ANY circle as being equal to pi * diameter.

OpenStudy (anonymous):

okay

OpenStudy (skullpatrol):

Have you seen this before?

OpenStudy (anonymous):

no

OpenStudy (skullpatrol):

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OpenStudy (anonymous):

yes i have seen this

OpenStudy (skullpatrol):

$$\Huge \pi \approx 3.14$$

OpenStudy (skullpatrol):

$$\Huge C \approx 3.14*diameter$$

OpenStudy (skullpatrol):

Which is the best approximation for the circumference of a circular garden that is 36 ft in diameter?

OpenStudy (nurali):

To find the circumference you can multiply pi by the diameter. 3.14x36=113.04

OpenStudy (anonymous):

so is the ans B

OpenStudy (nurali):

Yes

OpenStudy (anonymous):

Simple formula to always remember is \[\pi r ^{2}\] where r is the radius :)

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