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jonny [76]
3 years ago
13

The radius of a semicircle is extended by 6 inches.how does the measure of the semicircles arc length change?

Mathematics
1 answer:
vivado [14]3 years ago
7 0
Let x be the original radius.  Given that a semicircle will have an arc length of half of a circumference and C=2pr, the arc length will be just pr.

Now the difference of arc is then going to be:

p(6+x)-px

p(6+x-x)

6p inches

So the arc will be 6p inches longer.  Or if you wish to approximate...

≈18.85 inches
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