Question

bantu kak langsung jawab butuh bangedd ​

Answer 1

Jawaban:

1.luas= 358cm2

volume= 420cm3

2.luas= 664dm2

volume= 1.120dm3

3.luas= 478cm2

volume= 693cm3

4.luas= 108dm2

volume= 72dm3

Penjelasan dengan langkah-langkah:

1. p = 12cm l = 5cm t = 7cm

luas permukaan = 2×(p.l+p.t+l.t)

= 2×( (12×5)+(12×7)+(5×7) )

=2× (60+84+35)

=2×179

=358

Volume=p×l×t

=12×5×7

=420

2.p=14dm l=10dm t=8dm

luas permukaan=2×(p.l+p.t+l.t)

=2×( (14×10)+(14×8)+(10×8) )

=2×(140+112+80)

=2×332

=664

volume=p×l×t

=14×10×8

=1.120

3.p=11cm l=7cm t=9cm

luas permukaan=2×(p.l+p.t+l.t)

=2×( (11×7)+(11×9)+(7×9) )

=2×(77+99+63)

=2×239

=478

volume=p×l×t

=11×7×9

=693

4.p=6dm l=3dm t=4dm

luas permukaan=2×(p.l+p.t+l.t)

=2×( (6×3)+(6×4)+(3×4) )

=2×(18+24+12)

=2×54

=108

volume=p×l×t

=6×3×4

=72