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work out your perimeter of a semicircle with raduis 3cm give your answer in terms of pie

work out your perimeter of a semicircle with raduis 3cm give your answer in terms of pie class=

Respuesta :

jawayriyya

Answer:

18.84 cm

Step-by-step explanation:

P = 2 × pi × r

= 2 × 3.14 × 3cm

= 6cm × 3.14

= 18.84 cm

Answer:

9/2 π

Step-by-step explanation:

[tex]Perimeter = \frac{\pi r^2}{2} \\r = 3\:cm\\\\P = \frac{\pi \times 3^2}{2}\\ \\P = \frac{\pi \times 9}{2}\\ \\P = \frac{9 \pi}{2} \\\\P = \frac{9}{2} \pi[/tex]

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