ashlynayers05 ashlynayers05
  • 16-06-2018
  • Mathematics
contestada

A cake has a circumference of 25 1/7 inches. What is the area of the cake? Use 22/7 to approximate pi

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CastleRook
CastleRook CastleRook
  • 25-06-2018
To calculate for area given the circumference we proceed as follows:
C=2πr
where:
r=radius
thus given that C=25 1/7 in=176/7
thus plugging in our formula to solve for r we get:
176/7=2πr
thus
r=4.002~4.00 in
hence the area will be:
A=πr²
A=π×(4²)
A=50 2/7 in²


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