Answer:
the answer is 3 inches that is what I kniw
The circumference (perimeter) of the tire is 2 x π x r (radius= half of the diameter):
So one complete rotation is equivalent to the perimeter that is 2 x 13 x 3.1459
= 81.68 inches & if he competed 10 rotation that means he run for 10 x 81.68 ===> 816.8 In
Answer:
A=2πrh+2πr2
Step-by-step explanation:
you find the radius(r) and the height(h)
The circumference of a circle of diameter d is given by
... C = π·d
Chris will need π·(18 ft) ≈ 56.55 ft of fence. S/he will need to buy 57 ft of fence.
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Whether you use 57 because 56.55 rounds up to that, or because 56.55 is needed and 56 would be too short, doesn't really matter in this case. I tend to choose the latter reason.
