16-03-2017
Mathematics

contestada

What is the approximate circumference of a semicircle with a radius of 12 centimeters?

18.8 centimeters

37.7 centimeters

75.4 centimeters

150.7 centimeters

Respuesta :

16-03-2017

you do Pi×Radius^2
so 24×Pi=75.4
then 75.4÷2=37.7

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kelle1205 kelle1205

16-03-2017

Circumference of circle is 2*pi*radius
so 2*3.1416*12 = 75.4 cm
circumference of semicircle would be (1/2) (75.4) = 37.7 cm
answer is 37.7 cm

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