Jawabanmu

2014-09-02T18:55:09+07:00
Luas = p.l
=10cm.6cm
=60cm2

volume = p.l.t
=10cm.6cm.7cm
=420cm3
Luas balok
Luas balok
caranya :
= ( 2 x ( p x l ) ) + ( 2 x ( p x t ) ) + ( 2 x ( t x l ) )
= ( 2 x (10 x 6) ) + ( 2 x (10 x 7) ) + ( 2 x (7 x 6) )
= ( 2 x 60 ) + ( 2 x 70) + ( 2 x 42 )
= 120 + 140 + 84
= 344 cm2

Volume balok
caranya : p x l x t = 10 x 6 x 7 = 420 cm3
*maaf y kalo salah