Lengkapilah tabel berikut

L= (sudut pusat/360)×pi×r^2

baris 1 :
L= (60/360)×3.14×36=31.4

baris 2 :
31.4 = (25/360)×3.14×r^2
r^2 = 144
r = 12

baris 3 :
8478 = (x/360)×3.14×8100
3052.08 = 25434x
x = 120