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18,84=1/6dikali 3.14 dikali Rkuadrat
Rkuadrat=18,84 dikali 6 dibagi 1
setelah ketemu hasilnya diakar kan. krna itu kan kuadrat
besar sudut POQ = 60 derajat
π = 3,14
dit : r...?
jawab :
luas juring =α/360 derajat x π. r²
18,84 = 60/360 x 3.14. r²
18,84 = 1/6 x 3,14 . r²
18,84 = 0,52.r²
r² = 18,84/ 0,52
r² = 36
r = √36
r = 6 cm.. :)