halo kak tolong bantuannya, soalnya besok di kumpulin
Soal 1
Volume gabungan
= V limas + V balok
= ( ⅓ × La × t ) + ( P × L × T )
= ( ⅓ × 20 × 10 × 18 ) + ( 20 × 10 × 12 )
= ( ⅓ × 3.600 ) + 2.400
= 1.200 + 2.400
= 3.600 cm³
Soal 2
Volume gabungan
= V tabung + V ½ bola
= ( π × r² ) + ( ½ × 4/3 × π × r³ )
= ( 22/7 × 7² × 21 ) + ( ½ × 4/3 × 22/7 × 7³ )
= 3.234 + ( ⅔ × 1.078 )
= 3.234 + 718,67
= 3.952,67 cm³
