Using the formula C=2TTr, find the circumference of a circle with a diameter of 28 in. round your answer to the nearest inch
2 answers:
Radius = diameter /2
<span>so radius = 28/2 = 14 </span>
<span>Circumference = 2 x pi x 14 = 28 pi </span>
<span>or from calculator = 87.96 inches ....correct to 2 decimal places</span>
radius = diameter/2
so 28/2=14
using 3.14 for PI
2*3.14*14 = 87.92 = 88 inches
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