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1080 = 5x . 4x . 2x
1080 = 40x^3
1080 : 40 = x^3
27 = x^3
akar tiga dari 27 = x
3 = x
panjang = 5(3) = 15
lebar = 4(3) = 12
Luas alas = 15x12 = 180
2. v = La x t
v = (18 x 10 :2) x 25
V = 90 x 25
V = 2250
5a x 4a x 2a = 1080
40a^3 =1080
a^3 = 27
a = 3
L.alas= p x l
5a x 4a >> 5(3) x 4(3) >> 15 x 12=180
2.V= A x t
18 x 10/2 x 25
180/2 x 25
90x 25 =2250