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= 1/2 x 22/7 x 7
= 1/2 x 22
L1 = 11
L2 = s x s
= 14 x 14
L2 = 196
L3 = 1/2 x phi x r(kuadrat)
= 1/2 x 22/7 x 7
= 1/2 x 22
L3 = 11
L seluruhnya = L1 + L2 + L3
= 11 + 196 + 11
= 218dm2