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The perimeter of a semicircle is 20.56 kilometers. What is the semicircle's diameter? Use 3.14 for ​.

The perimeter of a semicircle is 20.56 kilometers. What is the semicircle's diameter? Use 3.14 for ​.
asked 199k views
1 vote
The perimeter of a semicircle is 20.56 kilometers. What is the semicircle's diameter?

Use 3.14 for ​.

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User Zac Sweers
by
8.7k points

1 Answer

1 vote

Answer:

Perimeter of semicircle =


\pi \: r


\pi \: r = 20.56 \: where \: \pi = 3.14 \\ r = (20.56)/(3.14) = 6.5

Buh diameter = 2r

D = 2 × 6.5

D = 13km

answered
User Freeall
by
8.8k points
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