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44cm = 22/7 x d
d = 44 x 7/22
d = 14
jari-jari = 7cm
Luas = π x r x r
= 22/7 x 7 x 7
= 154 cm2
44 = 22/7 x diameter
diameter = 44 : 22/7
= 44 x 7/22
d = 14
r = 7
luas = phi x r x r
22/7 x 7 x 7
= 154 cm2