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= 33
k2 = 1/4 x 22/7 x 28
= 22
k total = 33 + 22 = 55 cm
CMIIW
K l.besar = 1/4 x 2 x 7 x 22/7 = 11 cm
K total = 16,5 + 11 = 27,5 cm