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Dawson14
Dawson14 Dawson14
  • 22-02-2017
  • Mathematics
Answered

What is the best approximation for the perimeter of a semicircle with a diameter of 12 cm?


Use 3.14 to approximate pi.


18.84 cm


30.84 cm


61.68 cm


75.36 cm

Verified Answer :

Anonymous Anonymous
  • 22-02-2017

= (2 x pi x r) / 2
= (2 x 3.14 x 6)/2
= 37.68 / 2
= 18.84

answer is 18.84 cm (first one)

Answer Link
Khar2020 Khar2020
  • 18-02-2021

Answer:

Option 2

Step-by-step explanation:

if you multiply by 1/2 by pi times diamter give you 18.84 plus 12 would give you 30.84

Answer Link

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