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L=22/7. 14. 14
L=22. 2. 14
L=44. 14
L=616
Diameter=2r
D=2. 14
D=28
Keliling=πD
K=22/7. 28
K=22. 4
K=88
=22/7 x 14 x 14
=616 cm2
diameter=jari-jari x 2
=14 x 2
=28 cm
keliling= phi x diameter
=22/7 x 28
=88 cm