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What is the approximate perimeter of a semicircle with a radius of 9mm? Use pi as 3.14. Express your final answer to the nearest hundredth.
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1 vote
What is the approximate perimeter of a semicircle with a radius of 9mm?

Use pi as 3.14.
Express your final answer to the nearest hundredth.

User MichaelMitchell
by
7.8k points

2 Answers

3 votes

Answer:

I took the test and the answer is 46.26.

Explanation:

User Alexander Goncharov
by
8.2k points
5 votes
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
User Nsheff
by
7.7k points
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