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23-04-2020
Mathematics

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

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23-04-2020

Answer:

Perimeter of semicircle =

[tex]\pi \: r[/tex]

[tex]\pi \: r = 20.56 \: where \: \pi = 3.14 \\ r = \frac{20.56}{3.14} = 6.5[/tex]

Buh diameter = 2r

D = 2 × 6.5

D = 13km

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