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kliling 1/2 lingkaran alas krucut
ka = π x r
= 22/7 x 14
= 44 cm
jari-jari alas krucut
Kliling = 2 x π x r
44 = 2 x 22/7 x r
44 = 44/7 x r
r = 4 x 7/44
r = 7 cm
jawabnnya 7 cm