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Find the circumference of each circle given its radius or diameter. (Round your answers to two decimal places.)

 

(a) d = 18 in

____in 

(b) r = 6 m

_____m 

(c) 10 cm

 _____cm 

(d) 2.5 ft

______ ft

 Sep 4, 2018
 #1
avatar+100587 
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a) Circumference  = 2pi * r  =  2 pi * (d / 2)   = pi * d  = pi * 18 in   ≈  56.55 in

 

b)  2 pi * (6)  =  12 pi in   ≈  37.70 in

 

Again....c  and d don't specify if these are radii or diameters....

 

 

cool cool cool

 Sep 4, 2018
 #2
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Here’s C and D Hgt

Guest Sep 4, 2018
 #3
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I believe C is = 43.98

Guest Sep 4, 2018

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