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sertanlavr [38]
3 years ago
15

a bowling ball has a diameter of 8.5 inches. If it is rolled down a 60-foor bowling lane, how many complete revolutions will it

make?
Mathematics
1 answer:
Tatiana [17]3 years ago
3 0
We know that
A bowling lane<span> is 42 inches wide and </span>60 feet<span> long
1 ft-------> 12 in
60 ft-----> X
X=60*12------> X=720 in
</span>
[the length of a circumference]=2*pi*r
for r=8.5/2------> r=4.25 in
[the length of a circumference]=2*pi*4.25---------->26.69 in

if 26.69 in  represent---------------> 1 revolution
720 in (bowling lane)------------> X
X=720/26.69------> X=26.98  revolution

the answer is
26 revolutions
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