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= 22/7. 14.14
= 616 cm²
b. L AOB = 90/360. L lingk
= 1/4. 616
= 154 cm
c. L Sgt AOB = 1/2.r²
= 1/2. 14²
= 98 cm²
d. L Tembereng = L juring - L Sgt
= 154 - 98
= 56 cm²