Jawab:
1. Luas kubus = 6 x luas persegi
= 6 x (12 x 12) = 864 dm^2
2. Luas balok = 2 x ( (14x6) + (6x8) + (14x8) )
= 2 x (84 + 48 + 112)
= 488 cm^2
3. Luas prisma = (2xluas alas) + luas selimut
= (2 x 1/2 x 4 x 3) + ( (3+4+5) x 7)
= 12 + 84 = 96 cm^2
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Jawab:
1. Luas kubus = 6 x luas persegi
= 6 x (12 x 12) = 864 dm^2
2. Luas balok = 2 x ( (14x6) + (6x8) + (14x8) )
= 2 x (84 + 48 + 112)
= 488 cm^2
3. Luas prisma = (2xluas alas) + luas selimut
= (2 x 1/2 x 4 x 3) + ( (3+4+5) x 7)
= 12 + 84 = 96 cm^2