Jawabanmu

2014-01-17T16:15:19+07:00
A. 25 x 14 = 350
L lingkaran = (22/7) x 7 x 7 = 154
L. Arsiran = 350 - 154 = 196 cm^2

b. grafik fungsi y = (1/10)x^2
integral (1/10)x^2 = (1/30)x^3]10-0
Luas daerah arsir = 2 . (1/30) . 1000 = 2000/30 = 200/3 cm^2
2014-01-17T16:18:45+07:00
A. (25 X 14)- (22/7 X 49
350-(22 X 7)
350- 154 = 196
b. (1/2X3,14X10X10)-(10X10
157-100 = 57