r=7cm
60°
Luas juring:
L=60°/360°×Πr²
L=1/6×22/7×7×7
L=1/6×154
L=25⅔cm²(A)
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Penyelesaian:
r=7cm
60°
Luas juring:
L=60°/360°×Πr²
L=1/6×22/7×7×7
L=1/6×154
L=25⅔cm²(A)