Jawabanmu

2014-03-10T09:27:06+07:00
L lingkaran= 1/4 phi d kuadrat
                = 3/4 1/4 phi d kuadrat
                = 3/4. 1/4. 22/7.35.35
                = 3/16. 3850
                = 721,875
cmiiwww
2014-03-10T09:49:28+07:00
35 : 2 = 17.5
17.5 x 17.5 = 306.25
L = 0.75 x phi r^2
L = 0.75 x 3.14 x 306.25
L = 721.21875 (kalau salah maaf ya)