Jawabanmu

2014-06-05T10:53:50+07:00
A. tinggi = √(100 - 25) = 5√3
b. L = 1/2 . 10 . 5√3 = 25√3
c. Lj = 1/6 . 3,14 . 10. 10 = 52 1/3
d. Lt = Lj - L
2014-06-05T11:17:45+07:00
A. tinggi AOB 10²-5²=100-25=√75=5 √3
b. luas AOB =1/2 . alas. t = 1/2 . 10 .5 √3= 25 √3