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: 14 x 14
: 196 cm2
L 1/2 lingkaran : 1/2 x phi x r²
: 1/2 x 22/7 x 3.5 x 3.5
: 19.25 cm2
4 setengah lingkaran : 19.25 x 4: 77 cm²
L. yg diarsir : 196 -77 : 119 cm²