Tolong Dijawab

(1) v = La x t
4.128 = La x 43
La = 4.128 : 43 = 96 cm
(2) v = La x t
= 126 x 37
= 4.662 cm3
(3) Panjang kawat 1 kerangka =2(keliling alas) + 3(tinggi prisma) = 2(15+20+25) +x 3(18) = 120 + 54 = 174 cm
panjang kawat 30 kerangka = 174 x 30 = 5.220 cm
(4) Panjang kawat = 2 ( keliling alas) + 3(tinggi prisma) = 2(18+24+30) + 3(20) = 2(72) + 60 = 144 + 60 = 204 cm
(5) v = La x t
= 140 x 24
= 3.360 cm3
(6) Lp = 2(La) + keliling alas x tinggi prisma
= 2( 1/2 x 16 x 20) + (12+16+20)10
= 320 + 48(10)
= 320 +480 = 800 dm2
(7) Lp = 2(La) + keliling alas x tinggi prisma
=2( 1/2 x 30 x 40) + (30+40+50)25
= 1.200 + 120(25)
= 1.200 + 3.000 = 4.200 cm2
(8) v = La x t
9.288 = La x 72
La = 9.288 : 72 = 129 cm2
(9) v = La x t
9.968 = 178 x t
t = 9.968 : 178 = 56 cm
(10) Lp = 2(La) + keliling alas x tinggi prisma
= 2(1/2 x 6 x 8) + (6+8+10)12
= 48 + 24(12)
= 48 + 288 = 336 dm2
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