Bantu dong plisss,, pakai cara ya makasih ya udh mah bantu
soal no 1
A. volume Limas = 1/3 × luas alas × tinggi
= 1/3 × ( 20 × 15 ) × 18
= 1.800 cm³
B. volume Limas = 1/3 × luas alas × tinggi
= 1/3 × ( 18 × 18 ) × 32
= 3.456 cm³
C. volume Limas = 1/3 × luas alas × tinggi
= 1/3 × ( 35 × 24 ) × 15
= 4.200 cm³
soal no 2
volume hiasan = 1/3 × luas alas × tinggi
= 1/3 × ( 15 cm × 10 cm ) × 15 cm
= 5 cm × 10 cm × 15 cm
= 750 cm³
soal no 3
volume Limas = 1/3 × luas alas × t
640 = 1/3 × ( 12 × 16 : 2 ) × t
= 1/3 × 96
= 32
t = 640 : 32
t = 20 cm
soal no 4
volume Limas = 1/3 × luas alas × tinggi
100 = 1/3 × luas alas × 12
= 4 × luas alas
luas alas = 100 : 4 = 25
s = √ 25
= 5 cm
soal no 5
volume Limas = 1/3 × luas alas × tinggi
= 1/3 × ( 1/2 × ( 5 + 8 ) × 6 ) × 10
= 1/3 × 39 × 10
= 13 × 10
= 130 cm³