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= 216 cm2
3L s tgak = 3 x ( 18 x 35 )
= 1890 cm2
jd luasnya adlh 216 cm2+1890cm2= 2106 cm2
2. 2L alas = 2 x (8 x 6)
= 96 cm 2
L ss tgak = 2( 15 x 6 ) + 2( 8 x 15 )
= 180 cm2 + 240 cm2
= 420 cm2
jd luasny adlah 96cm2+420cm2 = 516cm2
=2. 1/2.a.t+(a+b+c). Tinggi
=2.1/2.18 .12 + (18 +15 +15). 35 cm
=2.108+48.35
=216+1680
=1896
2. Lp prisma= 2. luas alas+ kll alas. tinggi
=2. (p.l) + (2p+2l) . 15
=2. (8.6) +(16+12) . 15
=2. 48+28. 15
=96+420
=516
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