Question 118674
A goat is tethered in the middle of a grass field on a rope of length 3.7m. 
a State the shape of the area the goat can graze 
Circle 
b Calculate the size of the grazing area (giving your answer correct to 2 decimal places) 
Area = 3.142 x radius2
Area = 3.142 x 3.7^2
Area = 3.142*13.69
Area = 43.0084 = 43.01 [rounded to 2 decimal points]
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c Give another example of when you might need to use _ (pi).
The circumference of the circle mentioned in part a is 
C = pi*d where d is the diameter of the circle.
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d Identify an activity to support your understanding of _ (pi).
I'll leave that to you.
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Cheers,
Stan H.