Penjelasan dengan langkah-langkah:
1).Lp kubus = 6×S²
=6×12×12
=864 cm²
2).Lp balok = 2×{(p×l)+(p×t)+(l+t)}
= 2×{(12×8)+(12×10)+(8×10)}
=2×(96+120+80)
=2×(296)=592 cm²
3).Luas tabung = pi r²t
=22/7×14²×20
=22×2×14×20
=44×14×20
=616×20
=12.320cm³
4).Lp= L alas×(4× L segitiga)
=12×12+(4×12×16/2)
=144+(4×96)
Lp= 144+384=528cm2
5).Lp limas =2×L alas + k alas × t
=2×(6×8/2)+(6+6+6)×12
=2×24+18×12
=48+216 = 264cm²
:)
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Penjelasan dengan langkah-langkah:
1).Lp kubus = 6×S²
=6×12×12
=864 cm²
2).Lp balok = 2×{(p×l)+(p×t)+(l+t)}
= 2×{(12×8)+(12×10)+(8×10)}
=2×(96+120+80)
=2×(296)=592 cm²
3).Luas tabung = pi r²t
=22/7×14²×20
=22×2×14×20
=44×14×20
=616×20
=12.320cm³
4).Lp= L alas×(4× L segitiga)
=12×12+(4×12×16/2)
=144+(4×96)
Lp= 144+384=528cm2
5).Lp limas =2×L alas + k alas × t
=2×(6×8/2)+(6+6+6)×12
=2×24+18×12
=48+216 = 264cm²
:)