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2) gak keliatan angkanya
3)perbandingan volume kubus
vk1:vk2=5:15
=1:3
4) 4 (pangkat3) = 64 (D)
5) 5√2×3√2 = 5.3√2 = 15√2
6) B = w.m.p
x. = 9/12×6.000.000×9/100
x. = 405.000
mterakhir = mawal + bunga
= 6.405.000
7) u1 : 5
beda : 3
u20 = a+(n-1)b
= 5+19.3
=62
8) S50= n/2(2×a +(n-1)b)
= 50/2 (2.6+49.4)
= 25× 208
= 5200