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Mathematics 7 Online
OpenStudy (anonymous):

What is the area of a circle with a diameter of twenty-eight meters? Use twenty-two sevenths for pi.

OpenStudy (johnweldon1993):

Well you know the area of a circle is \[\pi r^2\] We have the diameter.....but we need the radius for the equation...so divide 28 in half to get 14...now have have all we need since we know to use 22/7 for pi \[Area = \frac{ 22 }{ 7 } \times 14^2\]

OpenStudy (anonymous):

|dw:1374184360493:dw|

OpenStudy (johnweldon1993):

Lol |dw:1374173612168:dw|

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