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Arisa [49]
3 years ago
5

What is the approximate perimeter of a semicircle with a radius of 9mm?

Mathematics
2 answers:
kogti [31]3 years ago
6 0

Answer:

I took the test and the answer is 46.26.

Step-by-step explanation:

Cerrena [4.2K]3 years ago
3 0
Act like it's a whole circle and find the perimeter, then divide by 2.

P = 2 * pi * r

P = 2 * 3.14 * 9

P = 56.52

Now divide by 2:

P = 28.26
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<h3>★ <u>Solution:</u></h3>

Since it is given that the two angles are supplementary their sum must be equal to 180 degree

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Now substitute the value of x in the given two measures of angles.

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