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

asked May 12, 2021 199k views

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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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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

Freeall answered May 16, 2021

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