hitunglah volume dan luas permukaan balok yang panjang rusuknya a.p=12cm,l=8cm,t=6cm b.p=15cm,l=12cm,t=8

a. L.p = 2p+2l+2t
= 2.12+2.8+2.6
= 24+16+12
=52cm²

Volume = p.l.t
= 12.8.6
=576cm³

b. L.p = 2p+2l+2t
= 2.15+2.12.2.8
= 30+24+16
= 70cm²

Volume = p.l.t
= 15.12.8
= 1440cm³

a. Volume=plt =12x8x6 =576 cm³
Lp=2(pxl+pxt+lxt)
=2[(12x8)+(12x6)+(8x6)]
=2(96+72+48)
=2x216=432 cm²
b. Volume=plt=15x12x8 =1440 cm³
Lp=2(pxl+pxt+lxt)
=2[(15x12)+(15x8)+(12x8)]
=2(180+120+96)
=2 x 396 =792 cm²