October 2018 1 23 Report
1) Besar sudut AOB = 60° dan panjang jari-jari OB = 40 cm
untuk pi= 3,14 hitunglah:
a. luas lingkaran
b. luas juring AOB
c. panjang apotema OC
d. luas ΔAOB
e. luas tembereng

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