Mathematics
Betha
8

Find the circumference of each circle for the given radius r or diameter d. Use pi=22/7 1.) r= 7 cm 2.) r=14 cm 3.) r=21/2 cm 4.) r=28/11 cm 5.) d=7 cm 6.) d=7/2 cm 7.) d=21/22 cm 8.) d=7/11 cm

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(1) Answers
georgie1jacob

1)(r =7)    2*22/7*7= 44 2)(r=14)   2*22/7*14=88 3)(r=21/2) 2*22/7*21/2=66 4)(r=28/11) = 2*22/7*28/11=16 5)(d=7, r=3.5) =22 6)(d=7/2, r=1.75)=44 7)(21/22, r= 0.477)=12 8)(d=7/11, r=0.318)=8

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