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5 votes
Help please..........

Help please..........-example-1
User Ganapathy
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1 Answer

3 votes
In this problem, r=4, so you can plug it into the equation f(r)=3.14r^2 because r is already in there.
f(4)=3.14*(4)^2
f(4)=3.14*16
f(4)=50.24
So your answer would be B) 50.24
User Justinpc
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