< =100°
d=36 cm
r=18 cm
L juring =100°/360° x L lingkrn
=5/18 x πr²
=5/18 x 3,14 x 18²
=5 x3,14 x18
=282,6 cm²
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< =100°
d=36 cm
r=18 cm
L juring =100°/360° x L lingkrn
=5/18 x πr²
=5/18 x 3,14 x 18²
=5 x3,14 x18
=282,6 cm²