Question 268099: Perimeter or circumference = 2 3.14, r = 70 feet; P=2x 22x70; P =440 feet.
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WHERE I HAVE THE 22 THEN YOU SEE A LINE UNDERNEATH IT & THEN THE 7..IT'S A FRACTION. MY SON IS STUDYING THE ASVAB FOR THE AIR FORCE & HE DOESN'T UNDERSTAND THIS RATIO. CAN YOU BREAK IT DOWN SO HE CAN UNDERSTAND? THANK YOU! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! For a circle with a radius of 70 feet, the circumference is
3.14 is sometimes use as the value for pi, and it's approximately 22/7.
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Using a calculator:
C = 2*pi*70 =~ 439.82 feet
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Using 22/7:
C = 2*(22/7)*70 = 440 feet
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Using 3.14:
C = 2*3.14*70 = 439.6 feet
440 feet is close enough for most things.
It's an error of ~ 0.04%
