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44 = 22/7 * d
d = 44* 7 : 22
=14
r = 7
L.juring = 60/360 * 22/7 * 7²
= 1/6 * 154
= 25,67 cm²
k=2 x phi x r
44=2 x 3,14 x r
44=6,28r
44/6,28=r
7=r
L=phi x r kuadrat
L=22/7 x 49
L=154 cm kuadrat
luas juring
<AOB/360 x luas lingkaran
60/360 x 154
B. 25,67 cm