Jawab:
a. V= p x l x t
= 10cm x 4cm x 3cm
= 120cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2x (pxt)
= 2 x ( 10 x 4) + 2 ( 4 x 3 ) + 2 x ( 10 x 3)
= 2 x 40 + 2 x 12 + 2 x 30
= 80 + 24 + 60
= 164cm kubik
b. V= p x l x t
= 8 x 3 x 5
= 2 x (8x3) + 2 x (3x5) + 2x(8x5)
= 2 x 24 + 2 x 15 + 2 x 40
= 48 + 30 + 80
= 158cm kubik
c. V= p x l x t/ rxrxr
= 5x5x5
= 125cm kubik
L Permukaan = 6 x (s x s)
= 6 x (5x5)
= 6 x 25
= 150cm kubik
d. V= p x l x t
= 6 x 6 x 15
= 180cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2 x (pxt)
= 2 x ( 6 x 6) + 2 x ( 6 x 15) + 2 x (6 x 15)
= 2 x 36 + 2 x 90 + 2 x 90
= 72 + 180 + 180
= 432cm kubik
e. V= p x l x t
= 5 x 2 x 8,5
= 85cm kubik
= 2 x (5x2) + 2 x (2x8,5) + 2 x ( 5x8,5)
= 2 x 10 + 2 x 17 + 2 x 42.5
= 20 + 34 + 85
= 139cm kubik
f. V= p x l x t
= 15 x 4 x 12
= 720cm kubik
= 2 x (15x4) + 2 x (4x12) + 2 x (15x12)
= 2 x 60 + 2 x 48 + 2 x 180
= 120 + 96 + 360
= 576cm kubik
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Jawab:
a. V= p x l x t
= 10cm x 4cm x 3cm
= 120cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2x (pxt)
= 2 x ( 10 x 4) + 2 ( 4 x 3 ) + 2 x ( 10 x 3)
= 2 x 40 + 2 x 12 + 2 x 30
= 80 + 24 + 60
= 164cm kubik
b. V= p x l x t
= 8 x 3 x 5
= 120cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2x (pxt)
= 2 x (8x3) + 2 x (3x5) + 2x(8x5)
= 2 x 24 + 2 x 15 + 2 x 40
= 48 + 30 + 80
= 158cm kubik
c. V= p x l x t/ rxrxr
= 5x5x5
= 125cm kubik
L Permukaan = 6 x (s x s)
= 6 x (5x5)
= 6 x 25
= 150cm kubik
d. V= p x l x t
= 6 x 6 x 15
= 180cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2 x (pxt)
= 2 x ( 6 x 6) + 2 x ( 6 x 15) + 2 x (6 x 15)
= 2 x 36 + 2 x 90 + 2 x 90
= 72 + 180 + 180
= 432cm kubik
e. V= p x l x t
= 5 x 2 x 8,5
= 85cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2 x (pxt)
= 2 x (5x2) + 2 x (2x8,5) + 2 x ( 5x8,5)
= 2 x 10 + 2 x 17 + 2 x 42.5
= 20 + 34 + 85
= 139cm kubik
f. V= p x l x t
= 15 x 4 x 12
= 720cm kubik
L Permukaan = 2 x (pxl) + 2 x (lxt) + 2 x (pxt)
= 2 x (15x4) + 2 x (4x12) + 2 x (15x12)
= 2 x 60 + 2 x 48 + 2 x 180
= 120 + 96 + 360
= 576cm kubik